1 files changed, 1 insertions, 0 deletions
diff --git a/UVtools.WPF/LayerCache.cs b/UVtools.WPF/LayerCache.cs
index 4c5f1b8..b8c84bc 100644
--- a/UVtools.WPF/LayerCache.cs
+++ b/UVtools.WPF/LayerCache.cs
@@ -36,6 +36,7 @@ namespace UVtools.WPF
                 Clear();
                 _layer = value;
                 Image = _layer.LayerMat;
+                if (Image is null) return;
                 ImageBgr = new Mat();
                 CvInvoke.CvtColor(Image, ImageBgr, ColorConversion.Gray2Bgr);