The GPO Kontakt 2 Player Update is available from NI and is causing some unforseen problems with the installation and usage. I have put together a step by step Howto to try and deal with the authorisation and installation of the update.
The Howto / tutorial is can now be found here:
And the same information on the Garritan Knowledge Base
The Howto uses the Windows version for the installation example but it should be similar for Mac users.
The Howto is organised in three sections;
Getting it to work
If you continue to experience problems getting your Player Update to work please PM or email me.