I have fully built out vault with 200 dwellers and 550k caps. Few explorers are maxed out SPECIAL and l.50.
Now when I enter my vault it just quits after about 20 seconds, regardless whether I do anything or not! It does not even give usual Android message "the program had quit"
I had tried spending money (thought a overload error or something) without help. Phone was rebooted few times. I could try a new vault, but it took me a month to get to this point and I do not feel like starting all over again.
EDIT 10/21/2015
As other poster have noted, Bethesda had fixed this issue with 1.2.1 update! Thank you!
(the only issue my revived explorers will take 10+ days to come back)
Oh, since we are on a roll, can selling multiple same items be made easier?
Thanks, Developers!
PS Good bye free time...