It says: "ERROR! In a permanent loop that can not be exited. Emulation will now stop"

Go out and play marbles.

So I Say to You Mr. Bloby Man (in a very Jamaican Style.).
post the rom name,
post the system specs,
post the emu version and the plugins too,
sometimes it happens to me also, try rebooting, or check if it is a bad rom,
if all that fails i can let you borrow my old marbles.