Default All emulators stoped working correctly?

I have n64, GBA, SNES, paid for emulators.
One day I start up one of my emulators and it just crashes every time it trys to load a game. I try other games, same problem, I try other emulators, same problem. After using these rom files for months, I try reloading my roms, no effect. I tried moving the roms back and forth from internal storage to sd storage, no effect. I've tried removing the sd card, no effect. I try downloaded new roms from alternate sources, which did get me one snes game to work right, but that's it.

I have only a couple ideas that might be cause the problem, but don't know where to start trouble shooting.
1. there was an update around the time of the problem(i think)
2. I started using a micro sd card. (maybe something to do with emulated storage causing a problem?)

I am unsure what to do at this point. Please advise.