diff --git a/Blender/coa_tools/__init__.py b/Blender/coa_tools/__init__.py
index c416b98..1517150 100644
--- a/Blender/coa_tools/__init__.py
+++ b/Blender/coa_tools/__init__.py
@@ -201,12 +201,14 @@ def update_sprites(dummy):
     update_scene = False
 
     context = bpy.context
-    objects = []
+
+    ## fix to work with linked group. Objects inside a linked group is not the context.visible_objects list.
+    objects = [x for x in bpy.data.objects if x.is_visible(context.scene)]
     
-    if hasattr(context,"visible_objects"):
-        objects = context.visible_objects
-    else:
-        objects = bpy.data.objects
+    # if hasattr(context,"visible_objects"):
+        # objects = context.visible_objects
+    # else:
+        # objects = bpy.data.objects
     
     alpha_update_frequency = get_addon_prefs(context).alpha_update_frequency    
     for obj in objects:
@@ -235,11 +237,12 @@ def update_sprites(dummy):
                 
         if update_scene:
             bpy.context.scene.update()
-            
+
     ### animation wrap mode
     if hasattr(context,"active_object"):
         sprite_object = get_sprite_object(context.active_object)
         if sprite_object != None and sprite_object.coa_animation_loop:
+            print("active")
             if context.scene.frame_current > context.scene.frame_end:
                 context.scene.frame_current = context.scene.frame_start
             if context.scene.frame_current == context.scene.coa_frame_last and context.scene.frame_current == context.scene.frame_start:
@@ -253,33 +256,30 @@ def scene_update(dummy):
     global ticker
     ticker += 1
     context = bpy.context
-    if hasattr(context,"visible_objects"):
-        objects = context.visible_objects
-    else:
-        objects = bpy.data.objects
-            
-    if  hasattr(context,"window_manager"):
-        wm = bpy.context.window_manager
-        if wm.coa_update_uv:
-            for obj in objects:
-                if "coa_sprite" in obj and obj.animation_data != None and obj.type == "MESH":
-                    if obj.coa_sprite_frame != obj.coa_sprite_frame_last:
-                        update_uv(bpy.context,obj)
-                        obj.coa_sprite_frame_last = obj.coa_sprite_frame
-                    if obj.coa_slot_index != obj.coa_slot_index_last:
-                        change_slot_mesh_data(context,obj)
-                        obj.coa_slot_index_last = obj.coa_slot_index
-                    if obj.coa_z_value != obj.coa_z_value_last:
-                        set_z_value(context,obj,obj.coa_z_value)
-                        obj.coa_z_value_last = obj.coa_z_value    
-                    if ticker%5 == 0:
-                        if obj.coa_alpha != obj.coa_alpha_last:
-                            set_alpha(obj,bpy.context,obj.coa_alpha)
-                            obj.coa_alpha_last = obj.coa_alpha
+    actOb = context.active_object
+    # change to update only when a coa armature is moved. Handy for driver update. This function seemed to be deprecated
+    
+    if actOb.type == 'ARMATURE' and 'coa_hide' in actOb:
+        for obj in [x for x in bpy.data.objects if x.is_visible(context.scene)]:
+            if "coa_slot" in obj:
+                # if obj.coa_sprite_frame != obj.coa_sprite_frame_last:
+                    # update_uv(bpy.context,obj)
+                    # obj.coa_sprite_frame_last = obj.coa_sprite_frame
+                if obj.coa_slot_index != obj.coa_slot_index_last:
+                    change_slot_mesh_data(context,obj)
+                    obj.coa_slot_index_last = obj.coa_slot_index
+                if obj.coa_z_value != obj.coa_z_value_last:
+                    set_z_value(context,obj,obj.coa_z_value)
+                    obj.coa_z_value_last = obj.coa_z_value    
+                # if ticker%5 == 0:
+                    # if obj.coa_alpha != obj.coa_alpha_last:
+                        # set_alpha(obj,bpy.context,obj.coa_alpha)
+                        # obj.coa_alpha_last = obj.coa_alpha
                 
     if hasattr(bpy.context,"active_object"):
         obj = bpy.context.active_object
         if obj != None and not obj.coa_sprite_updated and "coa_sprite" in obj:
+            print(obj)
             for thumb in preview_collections["coa_thumbs"]:
                 preview_collections["coa_thumbs"][thumb].reload()
             obj.coa_sprite_updated = True
@@ -339,4 +339,4 @@ def delete_thumb_previews():
     thumb_dir_path = os.path.join(tempfile.gettempdir(),"coa_thumbs")
     if os.path.exists(thumb_dir_path):
         shutil.rmtree(thumb_dir_path, ignore_errors=True)        
-atexit.register(delete_thumb_previews)
\ No newline at end of file
+atexit.register(delete_thumb_previews)