I have a Hula tune, Kaimana Hila, which has a famous change in meter. It is 16 bars. The first 11 are 4/4 and then 12 to 16 are 2/4. I had no problem writing this progression in BIAB, and it works. It shifts back to 4/4 at the end of the 16 bars.

Here's the problem: I set up to play 5 choruses. However, four bars into the 4th round, it stops playing. Wiggy huh?

I suppose there is some math I am missing. Any help will be much appreciated.