Thanks all. Here's the thing. I had originally installed BIAB on my C drive but had saved some songs on my "F" drive and would go back and forth. As said, some songs worked perfectly but a song I am interested in doing NOW didn't. It "Sputtered". I have LOTS more space on my "F" drive so thought I'd try reinstalling BIAB on the "F" drive and, now, that song works. Knock on wood.

Cheers!