avi playback problem

[Spidey00]

I have been having problems playing back all of the video (.avi) files that have been transferred from my digital camera. With WMP11, files play the correct audio track, but show a garbled version of the desktop or an explorer window in the video pane. This does not happen to any of my other video files, .avi or otherwise; ONLY .avi files transferred from my camera!

These files used to play, and they will still play on the mplayerc.exe (wmp 6.4) that I have. They also play on other XP systems, with WMP11. I also have the DIVX 6.5 player installed, on which they also do NOT play.

WMP11 version: 11.5.5721.5145
WMP classic: 6.4
Camera: Canon Powershot SD300
Computer: Dell Dimension 8200 running XP Home w/SP2
2.52 GHz P4, 1G RAM, Nvidia 4600Ti (128MB) graphics card