I was running an old download of iReal B with no issues until a couple of weeks ago when my Mac gave up the ghost. I downloaded iReal Pro to replace it and I'm finding that if I have it opened but unused for a while and then try to play a song it won't play. I can fix this by shutting it down and re-opening. Anyone come across this and is there a fix?

Another quirk - some songs on iReal pro have a count-in of 8 rather than 4, which they didn't in iReal B - is this deliberate and why? Can it be fixed?