The game was working perfectly until tried to go to Tatalia(had been there several times). If I arrive by boat, the map loads and then the game exits to desktop. If I arrive by coach, the game works for a minute or two before it exits to desktop. I am using Grayface 2.1 and not using quicksaves. I can go anywhere else in the game and everything works perfectly.

Any help will be appreciated.

If using hardware mode, try changing to software mode in the graphics menu.

Thanks for the suggestion, but it didn't help. I'm thinking that because this problem only happens with Tatalia, one of the files has gotten corrupted.

Don't know if this will work. But if you don't have the Boy Scout Leader in your party (Dragon Quest by Quixote) maybe add him. The change might be enough to load the map.

Different entry methods causing different results leads me to ask: Have you tried just walking there? What happens?

I'm assuming you don't have a Beacon in place.

Do you have a previous save? Can you check if going there from a previous save (from one when you knew it worked) crashes the game too?
Did you try backing up your saves and reinstalling the game?

It does this to me to. It's not the pc. It's either the greyface patch, or something gog added. I didn't have this problem before patch 2.1.