Summon Night X Tears crown Sea maiden bug

been playing the game for a while and i can't seem to summon the Sea Maiden it just locks up after and i have to restart it. I've tried on No$GBA and a R4 is there any fix to this bug?

I'm not sure about R4.As for no$gba, try this full package http://www.mediafire.com/download.php?0tmrvozm0gm and use no$zoomer
If it still freeze, try to mess around with the EX Option on no$zoomer