Hi there.
I recently and rather foolishly did a major system cleanup, and ran junk removers, registry cleaners and the works.

The next time i ran Maya, my mental ray rendering option was gone.
I even tried re-installing maya, but it's still gone.
I'm assuming i deleted a registry key by accident, or some file i need.

any ideas how to get it back? or what i need to add to the registry to fix this problem?

thanks guys.
Adam.