Just one very last thought...
Rather than use my file, have you tried creating your own by starting with a brand new, blank chordsheet.
To do this....
1. Select "File | New". (Don't simply delete the chords on an existing chord sheet. It's important to create a brand new, blank one.
2. Now select a style, tempo.
3. Set number of choruses to 1.
4. Add a couple of 2-beat bar mid-sheet.
5. On beat three of the 2-beat bar, put in some chord (it won't play).
6. Make the subsequent bar 4 beats.
7. Generate and play.
Does that bring any joy?
Regards,
Noel