is this on disk one ? i have the disk i just have to run it too see where it is having issues ... also did you download www.divx.com ...download that afor the codecs ? also have you tried the free dog tutorial to see if it locks up ? also i seen you are running maya 8 ..do you have maya 7 to run that script ..some scripts will not run on other maya .. just thinking cause i ran into that issue with older script and my maya 7 and 8