New score crash if too many instruments
If you create a new score with 14 flutes then MuseScore crashes.
If you create a new score with 8 trumpets then MuseScore crashes.
If you create a new score with 7 violins then MuseScore crashes.
(Tested using r. 1860 self-built, Windows XP)
I seem to remember the numbers for trumpet and flute being a little higher when I first encountered this yesterday. If the numbers above don't crash MuseScore for you try adding a few more.