Doukutsu Monogatari / Cave Story Sprite Edit

I tried editing the pbm files in the data directory, but when I try to use them, The game give me an error and doesnt load....

I tried everything I could think of, but the game wont take the edited file...

Any suggestions?

Nevermind, seems I don't need it anymore...
http://chozokatagi.ch.funpic.org/curlygameplay.html