i'm having the same problem, the old program still works wonderfull though. I tried it out before. I also just tried out nokia's video convertor and the file wouldn't even play in the default media player. It did play in mplayer but wasn't watchable because of the stuttering.

edit:
found a way around the "division by zero" error :
Start the program select a movie and a division by zero error will popup. click ok on the error and then the close button so that the program quits, it should make some settings and ini file in the directory where you "installed" it. Just start the application again and your previous selected movie will still be in there then press start to start converting You can also add other movies now without getting the division by zero error. at least i did not get it anymore