Alan,
you sound like my 30-something year old son. There seems to be a new interest in jazz among his crowd, but not traditional jazz as you say. Most of what he likes is odd time signature stuff. He would like to use BIAB for its in-depth focus on music theory, but as soon as he tries to choose a time signature that isn't 4/4, and the program croaks, he gives up.

https://www.dropbox.com/sh/ey71h8ep047758h/AAC12jNM0Hz9Q8zsh5iDeqNHa?dl=0