Make sure its not set to run as administrator I am sure Im sure my version is the latest and no issues but I can check later for you .
I've tried both ways as admin and standard user. I think it has something to do with licensing. The first time I entered the key it worked. When I restarted it, it didn't. They'll let me know anyway.
It was a version issue. Downloaded the very latest V3 version and it's working now. Ray said there was a bug in a previous release that caused it to shut donw prematurely. All good now.