Sounds like your running into corrupt files when your building your overviews.
Check here for detailed instructions on what to do in this situation >>
www.scratchlive.net
Quote:
another thing i wanted to ask... should i build the overviews from the start (using CTRL + click the button) every time i am upgrading to a diff version? its taking hours to do it ..
Once you've built the overviews for your songs you don't need to do it again. They are added to the actual tag of the song.