It was a bumpy release. Early today, at work, as soon as @antsprofiler was announced the deployment of the new version I tried to upgrade and was offered an upgrade to the version 188.8.131.52 over and over again.
Early tonight, at home, when I tried to upgrade I was offered to upgrade to 184.108.40.206.
The funny thing is that, if I try to run it from C:\Program Files I get a UAC dialog the mentions Reflector 5.1.3.
Just moved to my C:\Program Files (Utils) and it all works fine.