v3.3.2v3.3.2

- **UI:**
   - (Add) Setting: Restore window last position - If enabled, it will restore the main window last known client position on startup (#460)
   - (Add) Setting: Restore window last size - If enabled, it will restore the main window last known client size on startup (#460)
   - (Improvement) If there are missing dependencies it will show a proper window with information instead of crashing application without any visuals
   - (Improvement) Start maximized is set before windows spawn to prevent the flicker effect on main window
- (Add) File formats: Property `IsUsingTSMC` - Indicates whatever file globals are using TSMC or not
- (Change) Lithophane: Noise removal and gap closing iterations defaults to 0
- (Fix) Anycubic files: Printers are unable to use TSMC values after save (#457)
- (Fix) Pixel Editor button is hidden when using screens with scalling > 100% [dirty-fix] (#458)
- (Upgrade) .NET from 6.0.3 to 6.0.4

23 files changed, 392 insertions, 75 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8634e02..c928c80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 14/04/2022 - v3.3.2
+
+- **UI:**
+   - (Add) Setting: Restore window last position - If enabled, it will restore the main window last known client position on startup (#460)
+   - (Add) Setting: Restore window last size - If enabled, it will restore the main window last known client size on startup (#460)
+   - (Improvement) If there are missing dependencies it will show a proper window with information instead of crashing application without any visuals
+   - (Improvement) Start maximized is set before windows spawn to prevent the flicker effect on main window
+- (Add) File formats: Property `IsUsingTSMC` - Indicates whatever file globals are using TSMC or not
+- (Change) Lithophane: Noise removal and gap closing iterations defaults to 0
+- (Fix) Anycubic files: Printers are unable to use TSMC values after save (#457)
+- (Fix) Pixel Editor button is hidden when using screens with scalling > 100% [dirty-fix] (#458)
+- (Upgrade) .NET from 6.0.3 to 6.0.4
+
 ## 11/04/2022 - v3.3.1
 
 - **PrusaSlicer:**
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 38941a0..91d56c0 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,9 +1,11 @@
-- **PrusaSlicer:**
-   - (Add) AnyCubic M3
-   - (Add) AnyCubic M3 Max
-   - (Add) AnyCubic M3 Plus
-   - (Change) AnyCubic Photon Mono 4K: Display size and remove offset from bed shape
-   - (Change) AnyCubic Photon Mono X 6K: Display size and remove offset from bed shape
-- (Add) File format: AnyCubic PM3 and PM3M (#454)
-- (Fix) Tool - Lithophane: Value unit for "Lithophane height" was in px instead of mm
+- **UI:**
+   - (Add) Setting: Restore window last position - If enabled, it will restore the main window last known client position on startup (#460)
+   - (Add) Setting: Restore window last size - If enabled, it will restore the main window last known client size on startup (#460)
+   - (Improvement) If there are missing dependencies it will show a proper window with information instead of crashing application without any visuals
+   - (Improvement) Start maximized is set before windows spawn to prevent the flicker effect on main window
+- (Add) File formats: Property `IsUsingTSMC` - Indicates whatever file globals are using TSMC or not
+- (Change) Lithophane: Noise removal and gap closing iterations defaults to 0
+- (Fix) Anycubic files: Printers are unable to use TSMC values after save (#457)
+- (Fix) Pixel Editor button is hidden when using screens with scalling > 100% [dirty-fix] (#458)
+- (Upgrade) .NET from 6.0.3 to 6.0.4
 
diff --git a/Scripts/010 Editor/PhotonWorkshop.bt b/Scripts/010 Editor/PhotonWorkshop.bt
index 2837e63..64fd785 100644
--- a/Scripts/010 Editor/PhotonWorkshop.bt
+++ b/Scripts/010 Editor/PhotonWorkshop.bt
@@ -52,14 +52,15 @@ struct HEADER {
     uint ResolutionY <fgcolor=cBlack, bgcolor=cRed>;
     float WeightG <fgcolor=cBlack, bgcolor=cRed>;
     float Price <fgcolor=cBlack, bgcolor=cRed>;
-    uint PriceCurrencyDec <fgcolor=cBlack, bgcolor=cRed>;
+    wstring PriceCurrencyDec <fgcolor=cBlack, bgcolor=cRed>;
     uint PerLayerOverride <fgcolor=cBlack, bgcolor=cRed>;
     uint PrintTime <fgcolor=cBlack, bgcolor=cRed>;
     uint TransitionLayerCount <fgcolor=cBlack, bgcolor=cRed>;
     uint Padding <fgcolor=cBlack, bgcolor=cRed>;
 
-    if(fileMark.Version > 515){
-        uint Padding <fgcolor=cBlack, bgcolor=cRed>;
+    if(fileMark.Version >= 516){
+        // 0 = Basic mode | 1 = Advanced mode which allows TSMC
+        uint AdvancedMode <fgcolor=cBlack, bgcolor=cRed>;
     }
 };
 
diff --git a/UVtools.Core/FileFormats/FileFormat.cs b/UVtools.Core/FileFormats/FileFormat.cs
index 6102aef..d8b1a2a 100644
--- a/UVtools.Core/FileFormats/FileFormat.cs
+++ b/UVtools.Core/FileFormats/FileFormat.cs
@@ -1379,6 +1379,11 @@ public abstract class FileFormat : BindableBase, IDisposable, IEquatable<FileFor
     /// </summary>
     public bool AnyLayerIsUsingTSMC => this.Any(layer => layer.IsUsingTSMC);
 
+    /// <summary>
+    /// True if the file global property is using TSMC, otherwise false when not using
+    /// </summary>
+    public bool IsUsingTSMC => (CanUseAnyLiftHeight2 || CanUseAnyRetractHeight2) && (LiftHeight2 > 0 || RetractHeight2 > 0);
+
 
     /// <summary>
     /// Gets if any layer got modified, otherwise false
diff --git a/UVtools.Core/FileFormats/PhotonWorkshopFile.cs b/UVtools.Core/FileFormats/PhotonWorkshopFile.cs
index 3025610..43ab3a4 100644
--- a/UVtools.Core/FileFormats/PhotonWorkshopFile.cs
+++ b/UVtools.Core/FileFormats/PhotonWorkshopFile.cs
@@ -334,7 +334,7 @@ public class PhotonWorkshopFile : FileFormat
         [FieldOrder(15)] public float Price { get; set; }
 
         /// <summary>
-        /// 24 00 00 00 $ or ¥ C2 A5 00 or € = E2 82 AC 00
+        /// 24 00 00 00 $ or ¥ C2 A5 00 00 or € = E2 82 AC 00
         /// 7C
         /// </summary>
         [FieldOrder(16)] public uint PriceCurrencyDec { get; set; } = 0x24;
@@ -1644,8 +1644,8 @@ public class PhotonWorkshopFile : FileFormat
         Helpers.SerializeWriteFileStream(outputFile, HeaderSettings);
         if (FileMarkSettings.Version >= VERSION_516)
         {
-            //outputFile.WriteUIntLittleEndian(0);
-            outputFile.Seek(4, SeekOrigin.Current); // Extra padding
+            outputFile.WriteUIntLittleEndian(System.Convert.ToUInt32(IsUsingTSMC));
+            //outputFile.Seek(4, SeekOrigin.Current); // Extra padding
         }
 
         if (CreatedThumbnailsCount > 0)
diff --git a/UVtools.Core/Operations/OperationLithophane.cs b/UVtools.Core/Operations/OperationLithophane.cs
index e40caa7..e0e6786 100644
--- a/UVtools.Core/Operations/OperationLithophane.cs
+++ b/UVtools.Core/Operations/OperationLithophane.cs
@@ -49,8 +49,8 @@ public class OperationLithophane : Operation
     private decimal _resizeFactor = 100;
     private bool _enhanceContrast;
     private sbyte _brightnessGain;
-    private byte _gapClosingIterations = 4;
-    private byte _removeNoiseIterations = 4;
+    private byte _gapClosingIterations;
+    private byte _removeNoiseIterations;
     private byte _gaussianBlur;
     private byte _startThresholdRange = 1;
     private byte _endThresholdRange = byte.MaxValue;
diff --git a/UVtools.Core/SystemOS/SystemAware.cs b/UVtools.Core/SystemOS/SystemAware.cs
index 33a8d43..a7d7573 100644
--- a/UVtools.Core/SystemOS/SystemAware.cs
+++ b/UVtools.Core/SystemOS/SystemAware.cs
@@ -300,4 +300,29 @@ public static class SystemAware
     /// Gets if is running under MacOS and under app format
     /// </summary>
     public static bool IsRunningMacOSApp => OperatingSystem.IsMacOS() && AppContext.BaseDirectory.EndsWith(".app/Contents/MacOS");
+
+    /// <summary>
+    /// Gets the main name of the operative system
+    /// </summary>
+    public static string OperatingSystemName
+    {
+        get
+        {
+            if (OperatingSystem.IsWindows()) return "Windows";
+            if (OperatingSystem.IsMacOS()) return "macOS";
+            if (OperatingSystem.IsLinux()) return "Linux";
+            if (OperatingSystem.IsFreeBSD()) return "FreeBSD";
+            if (OperatingSystem.IsAndroid()) return "Android";
+            if (OperatingSystem.IsIOS()) return "iOS";
+            if (OperatingSystem.IsTvOS()) return "Tv OS";
+            if (OperatingSystem.IsWatchOS()) return "WatchOS";
+            if (OperatingSystem.IsBrowser()) return "Browser";
+            return "Unknown";
+        }
+    }
+
+    /// <summary>
+    /// Gets the main name of the operative system with architecture
+    /// </summary>
+    public static string OperatingSystemNameWithArch => $"{OperatingSystemName} {RuntimeInformation.OSArchitecture}";
 }
\ No newline at end of file
diff --git a/UVtools.Core/UVtools.Core.csproj b/UVtools.Core/UVtools.Core.csproj
index a78d002..6b451da 100644
--- a/UVtools.Core/UVtools.Core.csproj
+++ b/UVtools.Core/UVtools.Core.csproj
@@ -10,7 +10,7 @@
 		<RepositoryUrl>https://github.com/sn4k3/UVtools</RepositoryUrl>
 		<PackageProjectUrl>https://github.com/sn4k3/UVtools</PackageProjectUrl>
 		<Description>MSLA/DLP, file analysis, calibration, repair, conversion and manipulation</Description>
-		<Version>3.3.1</Version>
+		<Version>3.3.2</Version>
 		<Copyright>Copyright © 2020 PTRTECH</Copyright>
 		<PackageIcon>UVtools.png</PackageIcon>
 		<Platforms>AnyCPU;x64</Platforms>
@@ -70,7 +70,7 @@
 		<PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
 		<PackageReference Include="System.Memory" Version="4.5.4" />
 		<PackageReference Include="System.Reflection.TypeExtensions" Version="4.7.0" />
-		<PackageReference Include="System.Text.Json" Version="6.0.2" />
+		<PackageReference Include="System.Text.Json" Version="6.0.3" />
 	</ItemGroup>
 
 	<Target Name="PreparePackageReleaseNotesFromFile" BeforeTargets="GenerateNuspec">
diff --git a/UVtools.InstallerMM/UVtools.InstallerMM.wxs b/UVtools.InstallerMM/UVtools.InstallerMM.wxs
index 428cfbe..c641e82 100644
--- a/UVtools.InstallerMM/UVtools.InstallerMM.wxs
+++ b/UVtools.InstallerMM/UVtools.InstallerMM.wxs
@@ -2,7 +2,7 @@
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
   <?define ComponentRules="OneToOne"?>
   <!-- SourceDir instructs IsWiX the location of the directory that contains files for this merge module -->
-  <?define SourceDir="..\publish\UVtools_win-x64_v3.3.1"?>
+  <?define SourceDir="..\publish\UVtools_win-x64_v3.3.2"?>
   <Module Id="UVtools" Language="1033" Version="1.0.0.0">
     <Package Id="12aaa1cf-ff06-4a02-abd5-2ac01ac4f83b" Manufacturer="PTRTECH" InstallerVersion="200" Keywords="MSLA, DLP" Description="MSLA/DLP, file analysis, repair, conversion and manipulation" InstallScope="perMachine" Platform="x64" />
     <Directory Id="TARGETDIR" Name="SourceDir">
@@ -1500,9 +1500,6 @@
         <Component Id="owc8DBF076FA26C4EC39811CAD12FD3937C" Guid="8DBF076F-A26C-4EC3-9811-CAD12FD3937C">
           <File Id="owf8DBF076FA26C4EC39811CAD12FD3937C" Source="$(var.SourceDir)\api-ms-win-core-fibers-l1-1-0.dll" KeyPath="yes" />
         </Component>
-        <Component Id="owc04789579CAEC4E9D884765B39BA4BC5D" Guid="04789579-CAEC-4E9D-8847-65B39BA4BC5D">
-          <File Id="owf04789579CAEC4E9D884765B39BA4BC5D" Source="$(var.SourceDir)\mscordaccore_amd64_amd64_6.0.322.12309.dll" KeyPath="yes" />
-        </Component>
         <Component Id="owcF431B2B5B6264D78AAFA361A07841A68" Guid="F431B2B5-B626-4D78-AAFA-361A07841A68">
           <File Id="owfF431B2B5B6264D78AAFA361A07841A68" Source="$(var.SourceDir)\msquic.dll" KeyPath="yes" />
         </Component>
@@ -1557,6 +1554,9 @@
         <Component Id="owcD2245B900E5C448485AD96FE57629D9D" Guid="D2245B90-0E5C-4484-85AD-96FE57629D9D">
           <File Id="owfD2245B900E5C448485AD96FE57629D9D" Source="$(var.SourceDir)\UVtoolsCmd.runtimeconfig.json" KeyPath="yes" />
         </Component>
+        <Component Id="owc47E738FB97A34F13812E87CF7F2B4643" Guid="47E738FB-97A3-4F13-812E-87CF7F2B4643">
+          <File Id="owf47E738FB97A34F13812E87CF7F2B4643" Source="$(var.SourceDir)\mscordaccore_amd64_amd64_6.0.422.16404.dll" KeyPath="yes" />
+        </Component>
       </Directory>
       <Directory Id="ProgramMenuFolder">
         <Directory Id="scd220707349D4C8FA275285514283F3E2A" Name="UVtools" />
diff --git a/UVtools.WPF/App.axaml.cs b/UVtools.WPF/App.axaml.cs
index 61f3b8b..163df81 100644
--- a/UVtools.WPF/App.axaml.cs
+++ b/UVtools.WPF/App.axaml.cs
@@ -27,6 +27,7 @@ using UVtools.Core.Managers;
 using UVtools.Core.SystemOS;
 using UVtools.WPF.Extensions;
 using UVtools.WPF.Structures;
+using UVtools.WPF.Windows;
 using Bitmap = Avalonia.Media.Imaging.Bitmap;
 
 namespace UVtools.WPF;
@@ -172,21 +173,8 @@ public class App : Application
         AvaloniaXamlLoader.Load(this);
     }
 
-    public override async void OnFrameworkInitializationCompleted()
+    public override void OnFrameworkInitializationCompleted()
     {
-        if (Design.IsDesignMode)
-        {
-            SlicerFile = new ChituboxFile
-            {
-                LayerHeight = 0.05f,
-                Resolution = new (1440, 2560),
-                Display = new (68.04f, 120.96f),
-                DisplayMirror = FlipDirection.Horizontally,
-                MachineZ = 155,
-                BottomLayerCount = 3,
-                MachineName = "Epax X1"
-            };
-        }
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             UserSettings.Load();
@@ -208,21 +196,70 @@ public class App : Application
                 }
             }*/
 
-            if (!CvInvoke.Init())
+            /*if (!CvInvoke.Init())
             {
                 Console.WriteLine("UVtools can not init OpenCV library\n" +
                                   "Please build or install this dependencies in order to run UVtools\n" +
                                   "Check manual or page at 'Requirements' section for help");
-            }
+            }*/
 
             if (UserSettings.Instance.General.Theme != ApplicationTheme.FluentLight)
             {
                 ApplyTheme();
             }
 
-            MainWindow = new MainWindow();
             try
             {
+                if (CvInvoke.Init())
+                {
+                    if (Design.IsDesignMode)
+                    {
+                        SlicerFile = new ChituboxFile
+                        {
+                            LayerHeight = 0.05f,
+                            Resolution = new(1440, 2560),
+                            Display = new(68.04f, 120.96f),
+                            DisplayMirror = FlipDirection.Horizontally,
+                            MachineZ = 155,
+                            BottomLayerCount = 3,
+                            MachineName = "Epax X1"
+                        };
+                    }
+
+                    MainWindow = new MainWindow();
+                    if (UserSettings.Instance.General.StartMaximized)
+                    {
+                        MainWindow.WindowState = WindowState.Maximized;
+                    }
+                    else
+                    {
+                        if (UserSettings.Instance.General.RestoreWindowLastSize)
+                        {
+                            MainWindow.Width = UserSettings.Instance.General.LastWindowBounds.Width;
+                            MainWindow.Height = UserSettings.Instance.General.LastWindowBounds.Height;
+                        }
+
+                        if (UserSettings.Instance.General.RestoreWindowLastPosition)
+                        {
+                            MainWindow.Position = new PixelPoint(UserSettings.Instance.General.LastWindowBounds.Location.X, UserSettings.Instance.General.LastWindowBounds.Location.Y);
+                        }
+                    }
+                    desktop.MainWindow = MainWindow;
+                }
+                else
+                {
+                    desktop.MainWindow = new CantRunWindow();
+                }
+            }
+            catch (Exception e)
+            {
+                desktop.MainWindow = new CantRunWindow();
+                Console.WriteLine(e.ToString());
+            }
+            
+
+            /*try
+            {
                 if(!CvInvoke.Init())
                     await MainWindow.MessageBoxError("UVtools can not init OpenCV library\n" +
                                                      "Please build or install this dependencies in order to run UVtools\n" +
@@ -237,9 +274,9 @@ public class App : Application
                                                  "Additional information:\n" +
                                                  $"{e}", "UVtools can not run");
                 return;
-            }
+            }*/
 
-            desktop.MainWindow = MainWindow;
+            
             //desktop.Exit += (sender, e) => ThemeSelector.SaveSelectedTheme(Path.Combine(UserSettings.SettingsFolder, "selected.theme"));
         }
 
diff --git a/UVtools.WPF/Assets/Styles/Styles.xaml b/UVtools.WPF/Assets/Styles/Styles.xaml
index 05e5ccf..144009a 100644
--- a/UVtools.WPF/Assets/Styles/Styles.xaml
+++ b/UVtools.WPF/Assets/Styles/Styles.xaml
@@ -5,6 +5,10 @@
         <Border Padding="20"></Border>
     </Design.PreviewWith>
 
+    <Styles.Resources>
+        <SolidColorBrush x:Key="LogoColor" Color="#660066" />
+    </Styles.Resources>
+
 
     <Style Selector="Border.LayerNavigationToolTip">
         <Setter Property="BorderThickness" Value="5"/>
diff --git a/UVtools.WPF/Controls/ButtonWithIcon.cs b/UVtools.WPF/Controls/ButtonWithIcon.cs
index 11edc87..576df3a 100644
--- a/UVtools.WPF/Controls/ButtonWithIcon.cs
+++ b/UVtools.WPF/Controls/ButtonWithIcon.cs
@@ -11,6 +11,7 @@ using Avalonia.Controls;
 using Avalonia.Layout;
 using Avalonia.Styling;
 using Avalonia.Threading;
+using JetBrains.Annotations;
 
 namespace UVtools.WPF.Controls;
 
@@ -44,9 +45,10 @@ public class ButtonWithIcon : Button, IStyleable
         set => SetValue(IconPlacementProperty, value);
     }
 
-    public static readonly StyledProperty<string> IconProperty =
-        AvaloniaProperty.Register<ButtonWithIcon, string>(nameof(Icon));
+    public static readonly StyledProperty<string?> IconProperty =
+        AvaloniaProperty.Register<ButtonWithIcon, string?>(nameof(Icon));
 
+    [CanBeNull]
     public string Icon
     {
         get => GetValue(IconProperty);
diff --git a/UVtools.WPF/Controls/Tools/ToolLithophaneControl.axaml b/UVtools.WPF/Controls/Tools/ToolLithophaneControl.axaml
index 050866f..e1a68a0 100644
--- a/UVtools.WPF/Controls/Tools/ToolLithophaneControl.axaml
+++ b/UVtools.WPF/Controls/Tools/ToolLithophaneControl.axaml
@@ -122,7 +122,7 @@
 
                 <TextBlock Grid.Row="12" Grid.Column="0"
                            VerticalAlignment="Center"
-                           Text="Remove noise:"/>
+                           Text="Noise removal:"/>
 
                 <NumericUpDown Grid.Row="12" Grid.Column="2"
                                Classes="ValueLabel ValueLabel_px"
diff --git a/UVtools.WPF/MainWindow.axaml b/UVtools.WPF/MainWindow.axaml
index 95b010c..64266e2 100644
--- a/UVtools.WPF/MainWindow.axaml
+++ b/UVtools.WPF/MainWindow.axaml
@@ -1838,7 +1838,7 @@
 						  Command="{Binding OpenContextMenu}"
 						  CommandParameter="LayerPreviewOutline"
 						  VerticalAlignment="Stretch"
-						  Margin="1,0,0,0"
+						  Margin="1,0,2,0"
 						  Text="Outline ⮟"
 						  Spacing="5"
 						  Icon="fas fa-vector-square">
@@ -1895,11 +1895,11 @@
 						</uc:ButtonWithIcon>
 
 
-						<uc:ToggleButtonWithIcon HorizontalAlignment="Right"
+						<uc:ToggleButtonWithIcon
 						  IsChecked="{Binding IsPixelEditorActive}"
 						  ToolTip.Tip="Edit layer image: Draw pixels, add supports and/or drain holes."
 						  VerticalAlignment="Stretch"
-						  Margin="0,0,0,0"
+						  Margin="-1,0,0,0"
 						  Text="Pixel editor"
 						  Spacing="5"
 						  Icon="fas fa-drafting-compass"/>
diff --git a/UVtools.WPF/MainWindow.axaml.cs b/UVtools.WPF/MainWindow.axaml.cs
index efdda1d..d2b2fb5 100644
--- a/UVtools.WPF/MainWindow.axaml.cs
+++ b/UVtools.WPF/MainWindow.axaml.cs
@@ -431,20 +431,9 @@ public partial class MainWindow : WindowEx
 
         UpdateTitle();
 
-        var clientSizeObs = this.GetObservable(ClientSizeProperty);
-        clientSizeObs.Subscribe(size => UpdateLayerTrackerHighlightIssues());
-        var windowStateObs = this.GetObservable(WindowStateProperty);
-        windowStateObs.Subscribe(windowsState => UpdateLayerTrackerHighlightIssues());
-
-
+        
         DataContext = this;
 
-        AddHandler(DragDrop.DropEvent, (sender, e) =>
-        {
-            if (!_isGUIEnabled) return;
-            ProcessFiles(e.Data.GetFileNames()?.ToArray());
-        });
-
         _menuFileSendTo = this.FindControl<MenuItem>("MainMenu.File.SendTo");
         this.FindControl<MenuItem>("MainMenu.File").SubmenuOpened += (sender, e) =>
         {
@@ -853,9 +842,28 @@ public partial class MainWindow : WindowEx
         base.OnOpened(e);
         var windowSize = this.GetScreenWorkingArea();
 
-        if (Settings.General.StartMaximized
-            || ClientSize.Width > windowSize.Width
-            || ClientSize.Height > windowSize.Height)
+        var clientSizeObs = this.GetObservable(ClientSizeProperty);
+        clientSizeObs.Subscribe(size =>
+        {
+            Settings.General._lastWindowBounds.Width = (int)size.Width;
+            Settings.General._lastWindowBounds.Height = (int)size.Height;
+            UpdateLayerTrackerHighlightIssues();
+        });
+        var windowStateObs = this.GetObservable(WindowStateProperty);
+        windowStateObs.Subscribe(windowsState => UpdateLayerTrackerHighlightIssues());
+        PositionChanged += (sender, args) =>
+        {
+            Settings.General._lastWindowBounds.X = Math.Max(0, Position.X);
+            Settings.General._lastWindowBounds.Y = Math.Max(0, Position.Y);
+        };
+
+        AddHandler(DragDrop.DropEvent, (sender, args) =>
+        {
+            if (!_isGUIEnabled) return;
+            ProcessFiles(args.Data.GetFileNames()?.ToArray());
+        });
+
+        if (!Settings.General.StartMaximized && (ClientSize.Width >= windowSize.Width || ClientSize.Height >= windowSize.Height))
         {
             WindowState = WindowState.Maximized;
         }
@@ -898,6 +906,18 @@ public partial class MainWindow : WindowEx
         }*/
     }
 
+    protected override void OnClosed(EventArgs e)
+    {
+        base.OnClosed(e);
+
+        if (!UserSettings.Instance.General.StartMaximized && 
+            (UserSettings.Instance.General.RestoreWindowLastPosition ||
+            UserSettings.Instance.General.RestoreWindowLastSize))
+        {
+            UserSettings.Save();
+        }
+    }
+
     private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
     {
         Debug.WriteLine(e.PropertyName);
@@ -1348,6 +1368,8 @@ public partial class MainWindow : WindowEx
             }
         }
 
+        //title += $"   [{RuntimeInformation.RuntimeIdentifier}]";
+
 #if DEBUG
         title += "   [DEBUG]";
 #endif
diff --git a/UVtools.WPF/Program.cs b/UVtools.WPF/Program.cs
index 0fb088d..67389bd 100644
--- a/UVtools.WPF/Program.cs
+++ b/UVtools.WPF/Program.cs
@@ -58,6 +58,8 @@ public static class Program
         AppDomain.CurrentDomain.UnhandledException += CurrentDomainOnUnhandledException;
         //AppDomain.CurrentDomain.FirstChanceException += CurrentDomainOnFirstChanceException;
         BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+
+        // Closing
     }
 
     private static void CurrentDomainOnFirstChanceException(object? sender, FirstChanceExceptionEventArgs e)
diff --git a/UVtools.WPF/UVtools.WPF.csproj b/UVtools.WPF/UVtools.WPF.csproj
index 8708537..5cec53c 100644
--- a/UVtools.WPF/UVtools.WPF.csproj
+++ b/UVtools.WPF/UVtools.WPF.csproj
@@ -12,7 +12,7 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <RepositoryUrl>https://github.com/sn4k3/UVtools</RepositoryUrl>
     <RepositoryType>Git</RepositoryType>
-    <Version>3.3.1</Version>
+    <Version>3.3.2</Version>
     <Platforms>AnyCPU;x64</Platforms>
     <PackageIcon>UVtools.png</PackageIcon>
     <PackageReadmeFile>README.md</PackageReadmeFile>
diff --git a/UVtools.WPF/UserSettings.cs b/UVtools.WPF/UserSettings.cs
index 898fd6f..37adc53 100644
--- a/UVtools.WPF/UserSettings.cs
+++ b/UVtools.WPF/UserSettings.cs
@@ -10,6 +10,7 @@ using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
+using System.Drawing;
 using System.IO;
 using System.Xml.Serialization;
 using Avalonia.Media;
@@ -38,7 +39,10 @@ public sealed class UserSettings : BindableBase
     public sealed class GeneralUserSettings : BindableBase
     {
         private App.ApplicationTheme _theme = App.ApplicationTheme.FluentLight;
+        internal Rectangle _lastWindowBounds = new(40, 40, 1024, 600);
         private bool _startMaximized = true;
+        private bool _restoreWindowLastPosition;
+        private bool _restoreWindowLastSize;
         private bool _checkForUpdatesOnStartup = true;
         private bool _loadDemoFileOnStartup = true;
         private bool _loadLastRecentFileOnStartup;
@@ -68,12 +72,30 @@ public sealed class UserSettings : BindableBase
             set => RaiseAndSetIfChanged(ref _theme, value);
         }
 
+        public Rectangle LastWindowBounds
+        {
+            get => _lastWindowBounds;
+            set => RaiseAndSetIfChanged(ref _lastWindowBounds, value);
+        }
+
         public bool StartMaximized
         {
             get => _startMaximized;
             set => RaiseAndSetIfChanged(ref _startMaximized, value);
         }
 
+        public bool RestoreWindowLastPosition
+        {
+            get => _restoreWindowLastPosition;
+            set => RaiseAndSetIfChanged(ref _restoreWindowLastPosition, value);
+        }
+
+        public bool RestoreWindowLastSize
+        {
+            get => _restoreWindowLastSize;
+            set => RaiseAndSetIfChanged(ref _restoreWindowLastSize, value);
+        }
+
         public bool CheckForUpdatesOnStartup
         {
             get => _checkForUpdatesOnStartup;
diff --git a/UVtools.WPF/Windows/AboutWindow.axaml b/UVtools.WPF/Windows/AboutWindow.axaml
index c39f539..0a93a82 100644
--- a/UVtools.WPF/Windows/AboutWindow.axaml
+++ b/UVtools.WPF/Windows/AboutWindow.axaml
@@ -42,8 +42,7 @@
                         VerticalContentAlignment="Center"
                         HorizontalAlignment="Right"
                         Icon="fas fa-sign-out-alt"
-                        Text="Close">
-                </controls:ButtonWithIcon>
+                        Text="Close"/>
             </Grid>
 		</Border>
 
diff --git a/UVtools.WPF/Windows/AboutWindow.axaml.cs b/UVtools.WPF/Windows/AboutWindow.axaml.cs
index a4a8966..9fa0726 100644
--- a/UVtools.WPF/Windows/AboutWindow.axaml.cs
+++ b/UVtools.WPF/Windows/AboutWindow.axaml.cs
@@ -13,7 +13,23 @@ namespace UVtools.WPF.Windows;
 
 public class AboutWindow : WindowEx
 {
-    public static string OpenCVBuildInformation => CvInvoke.BuildInformation;
+    public static string OpenCVBuildInformation
+    {
+        get
+        {
+            try
+            {
+                return CvInvoke.BuildInformation;
+            }
+            catch
+            {
+                // ignored
+            }
+
+            return "Error: Unable to load the library.";
+        }
+    }
+
     public static string LoadedAssemblies 
     {
         get
@@ -41,12 +57,20 @@ public class AboutWindow : WindowEx
     {
         get
         {
-            var match = Regex.Match(CvInvoke.BuildInformation, @"(?:Version control:\s*)(\S*)");
-            if (!match.Success) return "Not found!";
-            var index = match.Groups[1].Value.LastIndexOf('-');
-            if (index < 0) return match.Groups[1].Value;
-            return match.Groups[1].Value[..index];
-            //return match.Groups[1].Value;
+            try
+            {
+                var match = Regex.Match(CvInvoke.BuildInformation, @"(?:Version control:\s*)(\S*)");
+                if (!match.Success) return "Not found!";
+                var index = match.Groups[1].Value.LastIndexOf('-');
+                if (index < 0) return match.Groups[1].Value;
+                return match.Groups[1].Value[..index];
+            }
+            catch 
+            {
+                // ignored
+            }
+
+            return "???";
         }
     }
 
@@ -81,7 +105,8 @@ public class AboutWindow : WindowEx
             var result = new StringBuilder();
             for (var i = 0; i < Screens.All.Count; i++)
             {
-                var onScreen = Screens.ScreenFromVisual(App.MainWindow);
+                // ReSharper disable once ConditionIsAlwaysTrueOrFalse
+                var onScreen = Screens.ScreenFromVisual(App.MainWindow is not null ? App.MainWindow : this);
                 var screen = Screens.All[i];
                 result.AppendLine($"{i+1}: {screen.Bounds.Width} x {screen.Bounds.Height} @ {screen.PixelDensity * 100}%" + 
                                   (screen.Primary ? " (Primary)" : string.Empty) +
diff --git a/UVtools.WPF/Windows/CantRunWindow.axaml b/UVtools.WPF/Windows/CantRunWindow.axaml
new file mode 100644
index 0000000..18e5307
--- /dev/null
+++ b/UVtools.WPF/Windows/CantRunWindow.axaml
@@ -0,0 +1,102 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:i="clr-namespace:Projektanker.Icons.Avalonia;assembly=Projektanker.Icons.Avalonia"
+        xmlns:core="clr-namespace:UVtools.Core;assembly=UVtools.Core"
+        xmlns:uc="clr-namespace:UVtools.WPF.Controls"
+        xmlns:systemOs="clr-namespace:UVtools.Core.SystemOS;assembly=UVtools.Core"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="UVtools.WPF.Windows.CantRunWindow"
+        Icon="/Assets/Icons/UVtools.ico"
+        WindowStartupLocation="CenterScreen"
+        CanResize="False"
+        SizeToContent="WidthAndHeight"
+        Title="{Binding Source={x:Static core:About.SoftwareWithVersion}, StringFormat={}{0} is unable to run}}">
+  <Grid RowDefinitions="Auto,*,Auto">
+      <Border Grid.Row="0" 
+              Padding="20"
+              Classes="Header">
+          <StackPanel Orientation="Horizontal"
+                      Spacing="10">
+              <i:Icon FontSize="64"
+                      FontWeight="Bold"
+                      Value="far fa-frown"
+                      Foreground="{StaticResource LogoColor}"
+                      HorizontalAlignment="Center"/>
+
+              <TextBox Classes="TransparentReadOnly"
+                       FontWeight="Bold">
+                  <TextBlock.Text>
+                      <MultiBinding StringFormat="{}{0}  [{1}]
+&#x0a;Unable to run due one or more missing dependencies.
+&#x0a;Triggered by: libcvextern  (OpenCV)">
+                          <Binding Source="{x:Static core:About.SoftwareWithVersionArch}"/>
+                          <Binding Source="{x:Static systemOs:SystemAware.OperatingSystemName}"/>
+                      </MultiBinding>
+                  </TextBlock.Text>
+              </TextBox>
+
+          </StackPanel>
+	  </Border>
+
+
+	  <TextBox Grid.Row="1"
+               Classes="TransparentReadOnly"
+               Padding="20"
+               Text="Your system doesn't have the required dependencies in order to run.
+&#x0a;Those dependencies are required at libcvextern/OpenCV library.
+&#x0a;UVtools is built on top of the OpenCV and therefore cannot run.
+&#x0a;
+&#x0a;Please install or build the dependencies in order to run the software.
+&#x0a;Check the manual page at 'Requirements' section for help."/>
+
+      <Border Grid.Row="2"
+              Margin="0"
+              Classes="FooterActions">
+
+          <Grid ColumnDefinitions="Auto,*">
+              <Button Grid.Column="0"
+                      Command="{Binding OpenAboutWindow}">
+                  <StackPanel Orientation="Horizontal" Spacing="10">
+                      <Image Source="/Assets/Icons/UVtools.ico" 
+                             Height="26"/>
+
+                      <TextBlock VerticalAlignment="Center"
+                                 Text="About"/>
+				  </StackPanel>
+			  </Button>
+
+			  <StackPanel Grid.Column="1" Orientation="Horizontal"
+                          Spacing="5"
+                          HorizontalAlignment="Right">
+
+                  <uc:ButtonWithIcon Padding="10"
+                                     VerticalContentAlignment="Center"
+                                     Icon="fab fa-edge"
+                                     Text="Open manual"
+                                     Command="{Binding OpenBrowser}"
+                                     CommandParameter="https://github.com/sn4k3/UVtools#requirements"/>
+
+                  <uc:ButtonWithIcon Padding="10"
+                                     VerticalContentAlignment="Center"
+                                     Icon="fas fa-question"
+                                     Text="Ask for help"
+                                     Command="{Binding OpenBrowser}"
+                                     CommandParameter="https://github.com/sn4k3/UVtools/discussions/categories/q-a"/>
+
+                  <uc:ButtonWithIcon Command="{Binding Close}"
+                                     IsCancel="True"
+                                     Padding="10"
+                                     VerticalContentAlignment="Center"
+                                     Icon="fas fa-sign-out-alt"
+                                     Text="Exit"/>
+              </StackPanel>
+          </Grid>
+
+          
+
+
+		</Border>
+  </Grid>
+</Window>
diff --git a/UVtools.WPF/Windows/CantRunWindow.axaml.cs b/UVtools.WPF/Windows/CantRunWindow.axaml.cs
new file mode 100644
index 0000000..d3cb4db
--- /dev/null
+++ b/UVtools.WPF/Windows/CantRunWindow.axaml.cs
@@ -0,0 +1,41 @@
+/*
+ *                     GNU AFFERO GENERAL PUBLIC LICENSE
+ *                       Version 3, 19 November 2007
+ *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ *  Everyone is permitted to copy and distribute verbatim copies
+ *  of this license document, but changing it is not allowed.
+ */
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using UVtools.Core.SystemOS;
+
+namespace UVtools.WPF.Windows
+{
+    public partial class CantRunWindow : Window
+    {
+        public CantRunWindow()
+        {
+            InitializeComponent();
+            DataContext = this;
+#if DEBUG
+            this.AttachDevTools();
+#endif
+        }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
+
+        public void OpenBrowser(string url)
+        {
+            SystemAware.OpenBrowser(url);
+        }
+
+        public async void OpenAboutWindow()
+        {
+            await new AboutWindow().ShowDialog(this);
+        }
+    }
+}
diff --git a/UVtools.WPF/Windows/SettingsWindow.axaml b/UVtools.WPF/Windows/SettingsWindow.axaml
index e5b44ab..88c8e5d 100644
--- a/UVtools.WPF/Windows/SettingsWindow.axaml
+++ b/UVtools.WPF/Windows/SettingsWindow.axaml
@@ -34,8 +34,23 @@
                             SelectedItem="{Binding Settings.General.Theme, Converter={StaticResource FromValueDescriptionToEnumConverter}}"/>
 
 					</StackPanel>
-                    <CheckBox IsChecked="{Binding Settings.General.StartMaximized}" Content="Start maximized"/>
-                    <CheckBox IsChecked="{Binding Settings.General.CheckForUpdatesOnStartup}" Content="Check for updates on startup"/>
+
+                    <StackPanel Orientation="Horizontal" Spacing="20">
+                        <CheckBox IsChecked="{Binding Settings.General.StartMaximized}"
+                                  ToolTip.Tip="If enabled, the main window will show up maximized"
+                                  Content="Start maximized"/>
+
+                        <CheckBox IsChecked="{Binding Settings.General.RestoreWindowLastPosition}" 
+                                  IsEnabled="{Binding !Settings.General.StartMaximized}"
+                                  ToolTip.Tip="If enabled, it will restore the main window last known client position on startup"
+                                  Content="Restore window last position"/>
+
+                        <CheckBox IsChecked="{Binding Settings.General.RestoreWindowLastSize}"
+                                  IsEnabled="{Binding !Settings.General.StartMaximized}"
+                                  ToolTip.Tip="If enabled, it will restore the main window last known client size on startup"
+                                  Content="Restore window last size"/>
+					</StackPanel>
+					<CheckBox IsChecked="{Binding Settings.General.CheckForUpdatesOnStartup}" Content="Check for updates on startup"/>
                     <CheckBox IsChecked="{Binding Settings.General.LoadDemoFileOnStartup}" Content="Loads a demo file on startup if no file was specified"/>
                     <CheckBox IsChecked="{Binding Settings.General.LoadLastRecentFileOnStartup}" Content="Loads the last recent file on startup if no file was specified"/>
                 </StackPanel>