diff --git a/Blender/coa_tools/__init__.py b/Blender/coa_tools/__init__.py
index e1b0481..9b95748 100644
--- a/Blender/coa_tools/__init__.py
+++ b/Blender/coa_tools/__init__.py
@@ -69,6 +69,7 @@
 from . operators import toggle_animation_area
 from . operators import view_sprites
 from . operators import version_converter
+from . operators import change_alpha_mode
 
 from . operators.exporter import export_dragonbones
 from . operators.exporter import export_creature
@@ -220,6 +221,8 @@ def draw(self, context):
     toggle_animation_area.COATOOLS_OT_ToggleAnimationArea,
     version_converter.COATOOLS_OT_VersionConverter,
 
+    change_alpha_mode.COATOOLS_OT_ChangeAlphaMode,
+
     # exporter
     export_dragonbones.COATOOLS_OT_DragonBonesExport,
     export_dragonbones.COATOOLS_PT_ExportPanel,
diff --git a/Blender/coa_tools/coa_properties.py b/Blender/coa_tools/coa_properties.py
index 744c319..a082a5a 100644
--- a/Blender/coa_tools/coa_properties.py
+++ b/Blender/coa_tools/coa_properties.py
@@ -77,6 +77,7 @@ def exit_edit_shapekey(self, context):
         if obj != None and obj.mode == "SCULPT":
             bpy.ops.object.mode_set(mode="OBJECT")
             obj.show_wire = False
+            obj.show_only_shape_key = False
 
 
 def hide_base_sprite(self, context):
diff --git a/Blender/coa_tools/functions.py b/Blender/coa_tools/functions.py
index b6dbc18..cec6595 100644
--- a/Blender/coa_tools/functions.py
+++ b/Blender/coa_tools/functions.py
@@ -83,7 +83,10 @@ def draw_sculpt_ui(self,context,layout):
             shapekey_index = int(obj.coa_tools.selected_shapekey)
             if shapekey_index > 0:
                 active_shapekey = obj.data.shape_keys.key_blocks[shapekey_index]
-                col.prop(active_shapekey,"value")        
+                subrow = col.row(align=True)
+                subrow.prop(active_shapekey,"value")
+
+                subrow.prop(obj,"show_only_shape_key", text="",icon="UNPINNED")
         
         col = layout.column(align=False)
         subrow = col.row(align=True)
diff --git a/Blender/coa_tools/operators/draw_bone_shape.py b/Blender/coa_tools/operators/draw_bone_shape.py
index b3fc695..98261de 100644
--- a/Blender/coa_tools/operators/draw_bone_shape.py
+++ b/Blender/coa_tools/operators/draw_bone_shape.py
@@ -82,7 +82,7 @@ def execute(self, context):
             else:
                 shape_name = context.active_pose_bone.name + "_custom_shape"
                 if shape_name not in bpy.data.objects:
-                    bone_shape = bpy.data.meshes.new_from_object(context.scene,bpy.data.objects[self.bone_shapes],False,"PREVIEW")                    
+                    bone_shape = bpy.data.meshes.new_from_object(bpy.data.objects[self.bone_shapes],preserve_all_data_layers=False, depsgraph=None)
                     bone_shape.name = shape_name
                 bpy.ops.coa_tools.edit_mesh(mode="DRAW_BONE_SHAPE", new_shape_name=self.bone_shapes)
         else:
diff --git a/Blender/coa_tools/operators/edit_mesh.py b/Blender/coa_tools/operators/edit_mesh.py
index f72432d..7b63c08 100644
--- a/Blender/coa_tools/operators/edit_mesh.py
+++ b/Blender/coa_tools/operators/edit_mesh.py
@@ -1127,7 +1127,9 @@ def modal(self, context, event):
     def exit_edit_mode(self,context,event,error=False):
         if not error:
             self.finish_edit_object(context)
-        bpy.types.SpaceView3D.draw_handler_remove(self.draw_handler, "WINDOW")
+        if self.draw_handler != None:
+            bpy.types.SpaceView3D.draw_handler_remove(self.draw_handler, "WINDOW")
+            self.draw_handler = None
         # bpy.types.SpaceView3D.draw_handler_remove(self.draw_handler2, "WINDOW")
         
         self.draw_handler_removed = True
@@ -1136,14 +1138,16 @@ def exit_edit_mode(self,context,event,error=False):
         self.sprite_object.coa_tools.edit_mode = "OBJECT"
 
         bpy.context.window.cursor_set("CROSSHAIR")
-        bpy.ops.object.mode_set(mode="OBJECT")
+        if context.active_object != None:
+            bpy.ops.object.mode_set(mode="OBJECT")
         self.sprite_object.coa_tools.edit_mesh = False
         functions.set_local_view(False)
 
         obj = context.active_object
-        context.view_layer.objects.active = bpy.data.objects[self.edit_object_name]
+        context.view_layer.objects.active = bpy.data.objects[self.edit_object_name] if self.edit_object_name in bpy.data.objects else None
         context.scene.coa_tools.view = self.prev_coa_view
-        bpy.ops.object.mode_set(mode="EDIT")
+        if context.active_object != None:
+            bpy.ops.object.mode_set(mode="EDIT")
         if self.mode == "DRAW_BONE_SHAPE":
             self.set_bone_shape_color_and_wireframe(context,self.bone_shape)
 
diff --git a/Blender/coa_tools/operators/edit_weights.py b/Blender/coa_tools/operators/edit_weights.py
index fafd871..6e2512b 100644
--- a/Blender/coa_tools/operators/edit_weights.py
+++ b/Blender/coa_tools/operators/edit_weights.py
@@ -104,7 +104,9 @@ def exit_edit_weights(self, context):
 
     def exit_edit_mode(self, context):
         ### remove draw call
-        bpy.types.SpaceView3D.draw_handler_remove(self.draw_handler, "WINDOW")
+        if self.draw_handler != None:
+            bpy.types.SpaceView3D.draw_handler_remove(self.draw_handler, "WINDOW")
+            self.draw_handler = None
 
         sprite_object = bpy.data.objects[self.sprite_object_name]