That's strange - that's the copy-protection that you had to go through with the original version of the game. I thought most versions of the game in circulation today came from the CD, which as far as I know had the copy-protection removed (because presumably it's cheaper to lose a few copies of a sixteen year old game than it is to bundle that damn codewheel with every copy.)
Either way, I was certain that ScummVM skips the copy-protection anyway, because none of us can be bothered to go up to the attic to get our codewheels.
Odd. Someone else here might be able to help you though. Or try contacting the ScummVM people... or installing a new version of ScummVM?