does it have something to do with motion blur? cause i absent-mindedly didn't make the super speed example turn off motion blur if it isn't supported
No, I've tried a couple of caps with motion blur (one by Ashley, a few by myself) and they ran without a problem.
I'm pretty sure the fault lies in the video drivers that I installed over the weekend. An error message pops up every time I restart the pc and it refers to the ATI Control Panel, which also showed up as an error when I tried to run the "mesh distortion" demos.
I'm going to download some older driver versions (and not bother with the catalyst control panel) and see if that does in fact get the caps to work.
-thanks for replying Ashley, Arcticus