Hi, let me give you some context: my computer freezes when I put a tab in full-screen mode (it happens sometimes, and I don't know why). Well, when I did that with the game, this happened: I forced a shutdown to restart it, and now when I try to open the game, this occurs:
No, your game isn't to blame; that sort of thing happens sometimes with any game when switching to full-screen mode, so I'm used to it by now—though I do still worry a little that it might cause some damage. What happened was that I put your game in full-screen mode and it froze; then, after restarting my computer and reopening the game, that message appeared. (Your game isn't at fault for the crash; I think it's a glitch with my computer.)