Sounds like MuseScore is incorrectly installed on your system. What OS are you on? If you have any Bravura or MScore fonts installed on your system, please remove them. Also follow the "Revert to factory settings" procedure from the Handbook to reset your palettes to their original state.
If this doesn't solve your problem, please ask for further iassistance on the Support forum, and include more information, like your OS, a copy of the score you are having problems with, precise steps to reproduce the problem, screenshots, etc - whatever you think would help us understand the problem.
Comments
Sounds like MuseScore is incorrectly installed on your system. What OS are you on? If you have any Bravura or MScore fonts installed on your system, please remove them. Also follow the "Revert to factory settings" procedure from the Handbook to reset your palettes to their original state.
If this doesn't solve your problem, please ask for further iassistance on the Support forum, and include more information, like your OS, a copy of the score you are having problems with, precise steps to reproduce the problem, screenshots, etc - whatever you think would help us understand the problem.