I have finished more than half of the game without problems until now. I have just started the Truth and Justice mission and have "liberated" all the towers, outposts, and fortresses (except in the area around Utkarsh) and every time I try to approach the area around Utkarsh, the game freezes and I get the message "game data is corrupt. Exit the game and then restart after deleting Far Cry 4 game data". There are lots of posts for deleting Far Cry 3 data from November, but this says "4" data. Any fixes without having to start the game over?