Game stops at end of game before talking to Custodian
 

Hello to everyone i got a bug or something in farewell to dragons...
i am at LEVEL 39 nearly the end of the game doing the last main quest. i am at
the top of the mountain where 2 of my characters leave me alone so i
can go talk to Custodian as soon as i walk close to him where he
wants to talk to me the game stops and exit to desktop

can any1 help me PLZ :!: