thanks for the info. I have no experience with sounds, but next week I will do some tests with the missing models and missing textures issue when I have to resave all my MapBuilder example levels due to format changes, before next update.

moreover, in the rare case when I use wmb, after loading the level, I make a cycle through all the entities and make a check whether their action is attached/running or not, if not then it is called (just set the my entity pointer to the actual entity before running the action).