Here's an update.

I trashed all my recent files on the theory they were all corrupted. Even opening one of them seemed to cause erratic BIAB behavior.

I retyped all the chords I wanted manually in a new file after a reboot and BIAB is not insisting on that urban drum track.

Wow... that's a pretty frustrating couple of days. I am not filled w/ confidence of BIABs stability. Especially the fact that almost the first thing pg support had me do was a complete reinstall. Makes me think I'm not alone?

Peace,

Ian