I have tried a number of times to register my copy online
and get nothing but 'invalid serial number' over and over again.
The format is XXX-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX, right?
Well I've entered it both with and without hyphens and I still get the message 'invalid serial number'.
I can't even play the upgrade I downloaded three days ago because of this. Any suggestions?