Hello. I experienced the same problem when I had a power cut, and when I restarted the system, I saw that the list off effects, transitions, etc. was empty. After I tried several time to repair this problem, I created an new administrator account on Windows 7 (x64) and now the effects lists is back and functional. (Note. If you switch into your old account in windows the problem is not solved, so you have to work only into your new account)