Unable to play Ram Preview, Iris Pro problem?

Hi, I cannot play the ram preview, when I click the button the image gets flipped and frozen.  I can scrub the timeline and see the animation I am working on, but I need a real-time preview.  I downloaded the last after effects patch for mavericks, but I think this is an issue with the Iris Pro graphics card.  I really need help with this as I am in the middle of a project... thanks!

See this thread:
http://forums.adobe.com/message/5484272#5484272
The upshot is that your GPU is not compatible with After Effects CC (12.0). This problem will go away with the After Effects CC (12.1) update due out this week. See the part on this page about Intel GPUs:
http://adobe.ly/AE_CC_12dot1_details

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