Re-opening an old thread...
 
As of last weekend, my SONAR Platinum installation also will only open in demo mode. If I open SONAR from within Command Center, then it opens normally, and I can save, etc.
 
I don't use SONAR regularly, so unfortunately, I can't pinpoint what might have changed to trigger this. I do keep up with the regular SONAR updates, and download them via Command Center, usually within a couple of weeks of their release.
 
From reading this thread, it sounds like the issue is on the Cakewalk server side. I did try to use offline activation, which appeared to be successful, but which did not resolve the problem. I'm open to any other ideas.
 
I did submit a case via SONAR Product Support, but they have not responded to my original request, nor to my follow-up request...