Originally posted by gster123
Have you run a playblast of the animation to make sure that its not something to do with the timings?
If its ok try outputing as a series of images and have a look at hte HOW DO I RENDER A MOVIE thread in the basics and newbie section and see if that looks ok, as it may be errors in the avi rendering thats causing your porblems
I figured out what the problem was... i wasn't rendering it properly... Post in Mental Ray Section
I think i've gotten every squared away now 
"How You Like My Nuts to Your Fist Style???"