Scrap what I said earlier about everything working fine now. I just tried to PBI Firefox. It went through the routine OK but when I checked in my 'PBI Programs' menu on the K Menu, it wasn't there.
It is in /usr/local/share/applnk/My Programs/Firefox.
What's the difference between:
Should I be pointing my K Menu entries to the former or the latter?
P.S. this is beginning to get really interested - I'm starting to learn my first understandings of the PC-BSD file system.