In other words, you would need to have PI 11 already installed on your computer when you go to install X3. If you did not get this question when you reinstalled X3, then I suspect that my guess about it using the older system of verification was indeed the case. But this was part of the installation procedure, with clear questions and dialogue boxes for the two serial numbers. Slightly later, Corel varied this to simply require, on installation of the later version (and with the earlier version no longer there or previously uninstalled) that the earlier serial first be entered, and then the later one. Moreover, that your X3 (new Corel version number after they took over Ulead, and it means version 13) was an upgrade on PI 11.Īs already noted above, the usual procedure with upgrades at that time was that you had to have the older version installed, and when you installed the later upgrade version, it would first search for the older version in order to see that the upgrade was valid. I note that indeed you already owned 'Ulead PhotoImpact V11 Eng RET NA' with its own serial number. Thank you for sending that copy of your Corel Products page (via email).