I've been playing the game for 9 hours so far..
Using the cheat but for people getting the white screen using the cheat only enable the test cheat.
The Gil cheat also seems to work other then that any other cheat will give you the white screen.
The screen freeze problem for shop hasn't seemed...
I was in the dungeon with Al and I was in save area and when I went to leave I just the moogle screen of death I had played for maybe 20mins or more I couldn't tell because of timer always at 00:00:00 :/
So thats how it happened.