I would prefer to stick with the current version of PT as we are getting towards the end of a session and don't want to risk breaking any other plugs.
I have downloaded the installer from the link you sent but still get the same error message from PT. Confusingly the installer .dmg file name suggests version 2.0.6 will be installed but the Get Info from OS X says the version installed is 9.0.2×0.
So at this point it would appear that neither the 9.0.2×0 or 2.0.6 version is being authorized.
Am I missing something here?