Unable to (re)activate Web Designer Premium V12 (or load V15)

I also want to commend Xara Support for their help. I sent them a longer message about the problem I had and why it happened and they responded that they are going to use that information in the future.

I don't know about web designer but if you can, deactivate the program then see if it will install. that may very well be the problem you are having. Let me know if that helps.