Are you saving the changes made before shutting down the application? That can be the problem as sometimes it doesnt automatically save before it shuts down. Then on restart it goes back to default settings. That is what it sounds like to me. If you are saving and it is still doing that then it has to be a problem with the application. Check here and see if this is what you get when you do the file unshare procedure. If it still happens then i would have to say it needs to be uninstalled and reinstalled as it has gotten corrupted.