print command not working (on Mountain Lion)

Hi

The print option won't work in Mountain Lion (maybe nothing to do with this), either via: file > print
or using the shortcut print option on the keypad (cmd/p).

Any suggestions?

Big thanks in advance!

By the way I can print other documents, in other programs, no problems, just Musescore won't respond, making it almost useless (if you can't print your scores).

p.s. I've already posted this in a bug report, but no joy. They suggested posting it here as someone might have come across this problem.