I downloaded ZSNES emulator from the software manager i was playing secret of mana. It was working great. I closed it and loaded it back up and figured out how to make the screen bigger. I closed it out with the screen at that size and tried to open it again and nothing. It will not open if i click on the game or if i just try to open the emulator.
What cam i do?
Try setting the video mode in the ZSNES user config file":
if you can't figure it out, just delete the file (or back it up and move it) and a new one will get created the next time you launch zsnes.