eboot invalid or unsupported format help

I just got demon's souls and I've wanted to play on it for the longest time and now i can but the only thing holding me back is tat it says:
E LDR: Invalid or unsupported file format: E:/PS3 Emulator/dev_hdd0/game/Demon's Souls/PS3_GAME/USRDIR/EBOOT.BIN
S LDR: Boot from gamelist per doubleclick: done
that would be the log when i go to boot it up
please help