added a 40s timeout on frame analisys

0.5.7

- added: timeout on scene plit and autocrop border to avoid freezing blender
- ui: minor correction

OP_add_layer.py

@@ -93,7 +93,7 @@ class GPEXP_OT_add_objects_to_render(bpy.types.Operator):
 class GPEXP_OT_split_to_scene(bpy.types.Operator):
     bl_idname = "gp.split_to_scene"
     bl_label = "Split Objects To Scene"
-    bl_description = "Take selected objects and send them to separate scene"
+    bl_description = "Take selected objects and send them to separate scene\n(new scene is named after active object)"
     bl_options = {"REGISTER"}
 
     @classmethod
@@ -103,7 +103,10 @@ class GPEXP_OT_split_to_scene(bpy.types.Operator):
     mode : bpy.props.StringProperty(default='ALL', options={'SKIP_SAVE'})
 
     def execute(self, context):
-        fn.split_object_to_scene()
+        err = fn.split_object_to_scene()
+        if err:
+            self.report({'ERROR'}, err)
+            return {"CANCELLED"}
         return {"FINISHED"}