Launching Color on a 2.7 Power mac dual core - not

I have a 2.7 ghz power mac. I've upgraded final cut studio through 5 up to the crossover to intel and then to 6. When I try to start Color it says Open GL not able to start - turnoff 'video desktop'. (the same programme runs on my octo core intel mac)
Question 1: Will color run on power PC macs and
Question 2. how do I turn off video desktop whatever that is - and
Question 3. why does it conflict with open GL
Question 4. Is there a color forum and why can't I see it if there is ?
The answer to 3 of course is not that important
Thanks in advance

Ok, that one is easy, just go into your system preferences, Decklinki settings and uncheck the "Enable Video Desktop" box. Tada, it's starting now.
As for the machine, I own the same setup and Color and Motion 3 just work fine, but I've put an ATI X800XT in that G5 for it to work.
Best regards,
Jean-Luc

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