Strange problem ?

[GinaSzanboti]

So, I have been playing Final Fantasy IV Complete Collection with this excellent emulator for about a week with no problems whatsoever. Then, while the game was up and running, I dropped the Nvidia Shield Tablet I was running it on. When I tried to run the game later, there were glitches in the opening, a bunch of sprites missing (the airship, Baron castle but not the town, etc.), and the menu didn't render correctly (just some dim outlines of some of the letters on a black background).

I tried deleting the game image and loading a fresh copy, and now the game wont even load ("Unfortunately, PPSSPP has stopped."). I have tried reinstalling ppsspp (including deleting the game files for a fresh install). Every other game still works perfectly, so there is no hardware problem.

Any ideas?