On Nexus S app quits after pressing button

heey,
A friend of mine tested my app on his Nexus S(2.3.4).
The game starts, menu loads but the when he presses a GUIButton then it just quits.
I don’t know why it does that because on all the other devices that I tested it just works.
Help is appreciated:)

Any chance of getting a log for us?

sry for asking but i’m new at testing :), but how do you get a log?