Hi BIABman.
I'm pleased to read that you got things going.
Shouldn't one expect BIAB to work correctly right out of the box?
Should one need to make all of your suggestions to play a simple song as it should sound?
My experience is that BIAB does work correctly 99% of the time once the initial release of a new version has settled down. One of the issues will all software is that despite however much beta testing a product goes through, it is not until it is released and the millions of users around the world play with it that bugs are found. I think that music software has extra hurdles to jump because of all the various pieces of equipment and software links that are peripheral to the main piece of software.
In your case, had "Auto-fix sour notes" been off (which is the default setting), things would probably have been fine. What you have discovered is a limitation (or a bug, even) associated with "Auto-fix sour notes". Andrew (from PG Music) is now aware of this and so it's something he and the development team now know about, thanks to you
--Noel