My world can't open.

I had a glitched chest in my world. I shown the quantity, but not the item. I blew it up with TNT and the game crashed. I tried opening my world, but it kept freezing midway or when it says, "Done!", and the game crashes. What do I do? I have a NOOK HD. I tried restarting my device and unistalling and installing MCPE, but still no luck.