Much, much later, I am happy to report that I am finally playing with my gear again heading into Star Party season for me.
I have a new pier-mounted micro computer (Windows 10 pro) to replace my laptop, and both SBIG drivers and SGP versions have updated (I am using 2.5.1.17), so it isn't a well-controlled test.
Caveats aside, though, I am now able to take bias and flat frames just as fast as I like with none of the problems with duplicate naming or "crashing" SGP mentioned above, and I think in another thread, as well.
Great work and thanks a bunch!
Craig