I'm not sure if it's related, but I had an issue when trying to update yesterday. After the CC was done downloading. I got an error massage saying it could not overwrite Startscreen.exe ,or something like, and a few other files associated with it. I cancelled and tried again and got the same error. I restarted my PC and was then able to upgrade.

ohgrant
 I'm not sure if it's related, but I had an issue when trying to update yesterday. After the CC was done downloading. I got an error massage saying it could not overwrite Startscreen.exe ,or something like, and a few other files associated with it. I cancelled and tried again and got the same error. I restarted my PC and was then able to upgrade.

Probably antivirus was getting in the way or you had Sonar open as a process, or you too need to run chkdsk /R.
Cheers..

So I downloaded the latest Command Center app and now await more updates to try the suggestions in this thread.  I have to say, for sheer volume of toys to play with, Sonar Platinum is amazing.  Thanks for the help folks...