Tim,
Thanks for posting to the forum! Thanks for your question, but we'd like to clarify. If you could please open the Help Menu, then choose About. In that new window that pops up, can you please tell us what is posted in bold at the top of the window? We want to verify whether or not you actually have the professional version installed or not. In the event that it states you are running the professional version, then it is probably picking up your previous license key that you used, and you will not have to enter it again. If you need further assistance, we'd like to get your license key, so we'd ask that you contact us directly. Please see www.prometheanworld.com, by following this link: www.prometheanworld.com/.../technical-support-numbers or via email at www.prometheankb.com. We have logged this post under case number 00376130. Please let us know if you have any questions.
Jonathan Music
Promethean Technical Support