Seems maybe, you may have some corrupted codec issues there.
The way to fix this is to run the check disk utility…
then restart your computer.
How?
Open run from the start menu,then type in chkdsk c:/f
then click ok, after, press the Y for yes, then do a restart.
Still, im not sure if this will offer a solution but its
worth a try.
Steve Rhoden
(Cow Leader)
Creative Arts Director and Film Maker.
Project Samples at:
http://www.youtube.com/hentys