Could you please create a short BIAB file that has a recorded melody (on either the Melody track or Soloist track). It doesn't have to be anything great musically. Save the file as MGU and then upload it in Dropbox (or equivalent). If you could then post the Dropbox share link here in the thread, we'll be able to download the file and test it with our systems.
I will do my best.
1. What is your sound card?
Sound Blaster ZX.
2. Have you downloaded a midi file from the internet and does it play ok?
This startled me for a moment because when I tried it (and I was sure I've played MIDI successfully before) no sound was played. But then I shut down BiaB and, yes, MIDI plays just fine.
1. Is your \bb directory excluded from your antivirus checking?
I do not use anti-virus. (For precisely this reason. Well, this among many.)
2. Have you tried right-clicking on the BIAB shortcut and selecting "Run as administrator" to see if that makes a difference?
It does not appear to.
When trying to solve problems, it is always advisable to use MME to track down the issue and then engage ASIO when the issue has been solved (that's my experience, at least).
OK.
In the meantime, and as already mentioned, in an effort to try and solve this problem, it would be great if you can post a songfile that has a midi recorded melody for us all to try.
I'll do that now.