I cannot save my score
Whenever I try to save my score, I get a weird popup: 
What is this? Is there anything I can do to fix this?
I appreciate any and all help.
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Comments
What OS is this? Looks like maybe you are out of disk space or you inadvertently write-protected the file, or there is some other OS-level error going on.
Does it work if you do Save As and choose a different name, or a different folder?
In reply to What OS is this? Looks like by Marc Sabatella
This is fully updated Windows 10 with MuseScore 2.0.3.
Turns out it does save if I Save As and change the name of the score. That solves my problem, thanks :)
or do you have that file without the .temp oprn in some other applicationm? Some clould sync process (tike dropbox, Google drive etc) or an unzipper (WinZIP, 7Zip)