My version of MediaLab is 2008.1.21.

The variable name in question is <HHHmem1-happy> (just like that, with the caps and everything). Is it too long, or not allowed to have capitals? I tried changing it to all lowercase in both the original location and where it is called, and it made no difference. Then I tried changing it to <boogle> to see if it was the hyphen or the length, but that made no difference either.