After running the installer or manually installing the rpms, I am getting this error: "Standard build detected. Upgrading canceled, because only 5.0.x versions supported for upgrading from Standard to RPM builds. " If I try to run psa from the command line this what the message I am getting: Key file not found! Plesk authorization failed: HTTP request error  Error: Plesk Software not running. Please help, cp is not working.