iOS very odd crash...

[MACloop]

Hello,
I have an app with 4 mapviews. To get to the mapviews the user has to use a tabbar. Everything works allright except for when I have been out side walking for a while (blue dot is pulsing) and when I get inside(the blue dot stops pulsing). If I switch between the views after the dot has stopped to move, the app sometimes crashes. It seems like when changing from one way of handling the user position to another is leading to somekind of conflict? I have no Idea where to look or what might be the error here... does any one know something about this?
Thanks in advance,
MACloop

 

[dejo]

What do the crash logs say is the cause?

 

[MACloop]

What do the crash logs say is the cause?

When the problem occured, I got an Bad Access in the console. It did not tell me any details. Today when I run the App the problem did not appear. I really do not know where to start to look :-(
MACloop

 

[dejo]

I really do not know where to start to look

I'd start here: Debugging Applications