It's a damn good game, I've been playing the American version for almost 80 hours now.
The version differences are extremely miniscule, the big difference being Mewtwo or Celebi.
The other exclusive pokémon (like Lucario exclusive to Time) can all be unlocked through Wondermail passwords anyway, with exception to Mewtwo/Celebi.
My fiancée tried playing this game on her AceKard 2 but at a certain point, not too far into the game, it gave her a warning that the game cartridge had been removed (and it hadn't been). Is this a known issue? Is there perhaps a fix?