Here is a simple answer -- DO NOT USE OPEN GL IN AFTER EFFECTS. Forget that it even exists. It does NOTHING to make renders faster. Turn it off and leave it off.
Frankly, I am surprised that After Effects allowed you to get as far as you did using Open GL.
> After a ram preview the software warns me about an error with OpenGL commands.
Am I correct in my guess that you are using a third-party plug-in that uses OpenGL, like Element 3D?
it wont let me turn it off help me there is no option
UPDATE : It seems to be working i installed CUDADriver and all seems to be running smooth in fast draft