Alright, so, I left my FH on while I went downstairs, came back up, it wasn't there. So I though, oh, must of crashed. Got it back up..and this is what happened, my cursor has gone see-through, plants have turned into my cursor, Preset files are in my sky, objects are black and white, the water isn't how it normally is. I can't even give you screen-shots because when I go into the FH folder, the name changed to: 78467a89820226ee66. The folders inside the folder are numbers too, and inside the folders..is literally :HotfixinstallerUI.dlll and Worddocument: eula.
What's happened? It's really frustrating, I didn't do anything to it. >.<