MuseScore opening to a white screen

So, for some reason, for the last week (despite uninstalling and reinstalling) MuseScore 4.4.4 hasn't been working. I get the launch splash, but am met with a white screen and nothing else. The taskbar icon is a white page, too.

Any ideas what's going on? The only thing that I can pin this blame on is that sometimes I would get the white screen when I opened a score from MuseScore 2.6 and before (including some MuseScore 1.2 and 1.3 scores).

Attached is what I'm met with (the blank page icon on the taskbar is MuseScore)