Try deleting the winfilecache. Here's a thread that explains how to do this:
showthread.php?t=1589
You can delete the folders for the menus that you are not working to your specification. Renaming the last folder to "cssmw" is not as simple as just renaming it. You will have to change all the links and references to the menu as well. If you just delete the other folders you should be in good shape.