Larry,

Thanks for the detailed response.

The reauthorization was simply in hopes that it might be the problem. But it did not solve anything.

Hindsight... had I known that there was nothing new in there - and so no reason to re-install, I would have unchecked them - since they do tend to cause all kinds of problem...there was no indication of that, though - so I did not know if they were, perhaps, updated in some way...

One thing to note - now that I have looked... the NEW stuff seems to have created a new Instruments folder under the IK Multimedia folder. The previous Instrument folder (which is still there) is under the Sampletank folder (which is under the IK Multimedia folder as well). I've tried pointing to each - with the same results. I can get the instruments to play if I add them into their slots each time - put that is lost when I close the song and the re-open it..

150+ Songs produced using BIAB RealTracks
And 50 more...
and some more...