When TP10 was released my TP9 license continued to be valid (as per the release notes at
http://www.cerious.com/release_notes10.shtml). I've just reinstalled Windows on my laptop, and installed the latest 4007 build of TP10, but when I enter my TP9 license name and code, I get the response "Code does not validate". Do I have to uninstall TP10, install TP9, enter the license there, and then install TP10 again in order to get TP10 licensed?