Jazz Templates - Page Settings Crash
The latest versions of 3.0 have this problem. My specific version is 'ce77e12'.
Steps to replicate:
1.) New Score, choose any Jazz Template.
2.) Go to Format at the top, then click Page Settings.
3.) It will crash consistently.
I have tested this with other templates, yet only Jazz templates cause this crash. It's possible that it is due to the change of the default font, but that's just speculation.