Nero transcoding hangs - help

just downloaded nero 6 (trial version) and am evaluating whether to buy or not. I loaded 4 files to make a DVD…added chapters, etc. The files were MPG-2, AVI and Windows Media Files that I had created using Video Explosion Deluxe. It starts to transcode the first file (MPG-2) and estimates about 5 hours for a 16 minute clip (1.2GHz processor), goes about 11 minutes and stops transcoding. The total time (second bar) still counts off minutes, but after about 11 minutes, the top bar (individual task progress) stops counting. This is in the NeroVision module. Any ideas?

yes the problem is your avi file has got error in it ,run avi repair on the avi file then it will trancode ok with out stoping