Hi Guys,
I had the same problem. I contacted support via email and Joey Adams was able to help me;
Simply log out of Cakewalk Command Center and then log back in, launching SONAR Platinum directly from the Cakewalk Command Center after you've logged back in.
To log out, click the settings button (looks like a cogwheel) in the upper-right corner of Cakewalk Command Center, then click Logout near the bottom.
Following these simple instruction cleared up the issue :).
Good luck, let us know if it worked for you guys...