Quicktime screwed up....

[tvradict]

Whenever I try to play a Quicktime video, the window opens as usual, but all I get are colours with no picture definition at all. The sound is ok though.

Tried updating quicktime, and its says its up to date. This only happened since I installed XP SP2.

Any ideas?

[ThePassenger]

Personally I'd try the simplest thing first. Uninstall and reinstall Quicktime.