Steps to reproduce:
1. Create a new score, from scratch, with as few options as needed (just add an instrument and hit "finish)
2. Open Edit -> Preferences
3. Go to "style" group and select a different style in the popup, such as "plastic". Click "Apply"
4. Go to language popup and select a different language. Click "OK"
Result: Muse Score crashes.
Expected result: muse score should continue working.
Reproduced using: nightly build r2821 on windows XP service pack 3, AMD 64, dual core, 1.80 Ghz, 1.75 GB of Ram