Your Score Could Not Be Saved
I just downloaded MuseScore to try it out. (OS: Windows 11 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.4.3-242971445, revision: eb6b367)
When I try to save a score I entered, whether locally or in the cloud, it fails. The error message says, "Your score could not be saved. An unknown error occurred while saving this file."
Comments
I discovered there were open options windows behind the main window that were still open. When I closed those, the program let me save the file. If you encounter this error, try minimizing your windows one at a time to see if you have a pop-up window for the program lurking in the background.