I have a Modded Wii that has CMIOSv3 already installed, but for some reason, the Wii will not play or spin GC discs. It reads Wii discs fine, but if I put in the smaller, original GC discs, it grabs them, makes a few noises, and then tells me "An error has occured".

Is it a bad laser or disc loader?
Any suggestions?
Thanks...