When using a saved file, the Class window doesn't properly load. The program goes into some kind of non-responsive state, effectively crashing the program. I noticed this when playing with a V4.30.001 save file, so I created a new file with the new version of the planner. But the new save file also crashes the program when accessing the Class window.
Other than that - WOW! This version is Awesome!
It seems to load noticeably faster, too.