I've also got the script `Game_Interpreter` error when leaving the Elf Village Home. Seems that it happens when I don't change my party members before leaving. So if you're getting the error try saving and changing your party members before leaving the house whenever you leave it.
So I missed getting the southport home and shop till later in the game. When I went to the storefront it mentioned that I'd need to go talk to Florine about getting someone to run it. I'd done the quest that leaves her "Unavailable" Yet I was still able to talk to her position in the shop when I went in there next.
