iMovie ERROR

[mahidul96]

Hi Guys,

Last night I successfully updated to Mac OS X 10.6.7 from 10.6.2 and then installed Microsoft Office 2008 and iLife 2011. They both installed successfully on my iMac but when I try to open iMovie, I get an error which reads;

"Quartz Extreme required.

iMovie requires a graphics card that is compatible with Quartz Extreme. One or more of your graphics cards does not support Quartz Extreme."

I do not understand why I am getting this error as iMovie is suppose to work on all iMac's.

Does anyone know how to fix this?

Thanks 

[Salmon Trout]

Try changing the screen resolution to something different, and then back again. See if that fixes it.

[mahidul96]

I've already tried that but it dosn't work I'm afraid but thanks for the response though