Musescore does not Progress Beyond the Splash Screen
I am running:
The computer has had both French and English interface options on it; it does not currently, though.
The Problem: Musescore will not progress beyond the splash screen. In the system monitor, the process mscore and mscore.real are said to be sleeping.
Background: The computer had both French and English installed on it. Before that, it was just English. I would log into French as the default. I am convinced that the two languages have something to do with the problem. Note that I never actually changed the Musescore language from English. The menus displayed in French while I was running my computer in French, but the palate buttons remained in English. I suspect this is Ubuntu doing some translation of the menus on it's own part, but I don't know.
The Problem in Detail:
The problem first arose a couple days ago when I was working on the firewalls of the three computers in the house to get them to share files with each other. In doing so, I logged into my system in English. The next time I tried to open Musescore (I believe while I was logged into my account in French, but I'm not 100% sure), it only showed the splash screen, and did not progress beyond it.
In order to fix the problem here are the steps I took (note that this did not actually fix it: see next paragraph).
1) sudo apt-get purge musescore
2) Delete the MusE folders in .config and .local/share/data
3) Uninstall the French interface translation (so that there was only English).
4) Restart the computer to be logged into English.
5) sudo apt-get install musescore
Then I would start Musescore and it would work perfectly fine. However, the next time I would open it, it wouldn't work. I'm not sure it stopped working when I opened it again, or when I turned the computer on again. Anyhow, it regressed to the same problem described above. If I tried fixing it with the above 5 steps, the same outcome would happen.
Any suggestions would be appreciated.