NeroDigital to AVI problem



I’m having aproblem with converting a NeroDigital .mp4 file to a AVI, i’ve tried using “mp4UI” as stated in one of the threads in this forum but all i can do is extract the Sound (as AAC) but when i try to export the Video it shows the flollowing error dialog box:

Exception: MPEG-4 Internal
Reason: couldn’t read sample 1

Any help with this problem. Is there another way of converting to AVI