Please help!!!! I was working on a score that I just started, which I hadn't saved yet, and then I clicked to upload it to the cloud (score manager). It said it uploaded, but it doesn't show up in the score manager on the musescore website! And then, when I clicked on the musescore app to open it up again, a little box shows up, saying "Score is Invalid". It won't let me open the score at all!! I haven't done anything which I hadn't done to my other scores with this one, so I have no idea what is going on! And I know the score isn't corrupted, because it would've told me earlier, and it's a pretty simple score. PLEASE HELP I AM AT MY WITS END.