Yo Splash, Two big bug reports here. First, on Two Island of the Sevi Islands if you try and talk to the old lady with a Blastoise (not sure about other starters.) at the head of the party, the game will suddenly go back to the title screen. And on Three Island when you face off against the boss of the Biker Gang the battle music plays but the screen goes black.
Just thought I should let you know, hope I'm not giving you information you were already planning on fixing... Hope it helps you.