Are you running the latest build for BIAB. We're up to #614. I've just tried drag and drop from BIAB 64-bit to Reaper 64-bit and it worked fine for me with both Realtracks and MIDI.

https://www.pgmusic.com/support.htm

One other thought is that your problem could be due to BIAB not having a VSTi/DXi synth loaded. Go to the link below and set your MIDI driver according to the numbered instructions. If you update to build #614, CoyoteWT is included as a soft synth.

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=461558#Post461558

Regards,
Noel


MY SONGS...
Audiophile BIAB 2025