FYI, when asking for help, it is better to use the support forum, and tell us what OS you are on and attach the specific score you are having problems with and precise steps to reproduce the problem. It sounds like perhaps there is an installation problem on your system, but we would still need the above information in order to help.
Comments
FYI, when asking for help, it is better to use the support forum, and tell us what OS you are on and attach the specific score you are having problems with and precise steps to reproduce the problem. It sounds like perhaps there is an installation problem on your system, but we would still need the above information in order to help.
Try https://musescore.org/en/handbook/revert-factory-settings