Yes, I have, I even uninstalled and rebooted before reinstalling. This only appears to happen if installed on a computer that had an older version installed. Is there Windows registry keys, files/folders, or user/system variables we should be manually deleting? It feels like it is residue left over from the previous install.

I am experiencing this issue after upgrading to 6.6.1.5 . How can I get the logs and send them to you?