Hi, just a quick update on my BIAB problems. While trying to implement Andrew's solution I ran into a problem - Windows wouldn't let me delete font files. I was trying different things (changing permissions, file ownership, etc.) but couldn't delete the files. At some point I lost internet access, and then I started BIAB. It started without any problems.

So, I still don't know what was the problem, but BIAB is working for now and that's good enough for me. Thank you for all your help!