I was playing my Ruby Hack last night and found a nasty glitch. If you pick the male character and battle May, she won't leave and go back to the lab. You could even challenge her over and over again. It worked fine if you pick to be the girl though.
I even compaired my scripts with a normal, non-hacked Ruby rom and found nothing to be different. When I played the game again after adding the word LAB (it was in funky looking text in the normal rom) to the end of May's script, it worked fine. 0.0