<< the purpose of the "rebuilding the index" found in divxfix was to rebuild the index at the last part of the file so it would think that the file was completed... it worked for me before but not for my kazaa downloads >>
Now that I think about it, my clip of Happy Gilmore was from Winmx 2.6, which doesn't download multiple parts of files at the same time. The errors you're seeing there are probably from when it encounters "blank space" between the various parts which have already been completed. AFAIK, the DivX Fix program only works when you have one consecutive section of the file. 🙁