Deregister the update callback on end of the application.

This fixes a crash on exit.

2 files changed, 2 insertions, 6 deletions

diff --git a/lib/Slic3r/GUI/MainFrame.pm b/lib/Slic3r/GUI/MainFrame.pm
index 77d7956c9..6baefa545 100644
--- a/lib/Slic3r/GUI/MainFrame.pm
+++ b/lib/Slic3r/GUI/MainFrame.pm
@@ -107,6 +107,7 @@ sub new {
         wxTheApp->{app_config}->save;
         $self->{plater}->{print} = undef if($self->{plater});
         Slic3r::GUI::_3DScene::remove_all_canvases();
+        Slic3r::GUI::deregister_on_request_update_callback();
         # propagate event
         $event->Skip;
     });
diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 340807f5f..adaf101fb 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -145,11 +145,6 @@ sub new {
         $self->rotate(rad2deg($angle_z), Z, 'absolute');
     };
 
-    # callback to call schedule_background_process
-    my $on_request_update = sub {
-        $self->schedule_background_process;
-    };
-    
     # callback to update object's geometry info while using gizmos
     my $on_update_geometry_info = sub {
         my ($size_x, $size_y, $size_z, $scale_factor) = @_;
@@ -208,7 +203,7 @@ sub new {
         Slic3r::GUI::_3DScene::register_on_viewport_changed_callback($self->{canvas3D}, sub { Slic3r::GUI::_3DScene::set_viewport_from_scene($self->{preview3D}->canvas, $self->{canvas3D}); });
     }
 
-    Slic3r::_GUI::register_on_request_update_callback($on_request_update);
+    Slic3r::GUI::register_on_request_update_callback(sub { $self->schedule_background_process; });
     
 #    # Initialize 2D preview canvas
 #    $self->{canvas} = Slic3r::GUI::Plater::2D->new($self->{preview_notebook}, wxDefaultSize, $self->{objects}, $self->{model}, $self->{config});