I found the solution myself:
There is a licence file for Final Cut Studio 2 called "Final Cut Studio system ID" which resides in the following folder:
[local hard-drive]\Library\Application Support\Pro Apps\
Deleting that file will prompt the installation software (or one of the FCS2...
I have 2 licences for Final Cut Studio 2:
1 is an upgrade from FCS1 for MBpro1
The other is a stand-alone (NFR copy) for MBpro2.
I need to transfer the upgrade licence from MBpro1 to MBpro2
And install the NFR copy onto MBPro1 for the first time.
2 problems in one here:
1) On install...