Strange crash while adding to NSMutableArray
The application crashes on the row:

    [uids addObject:user.uid];

Who ca tell why??
![enter image description here][1]


  [1]: http://i.stack.imgur.com/tHqw0.png
Strange crash while adding to NSMutableArray
===

The application crashes on the row:

    [uids addObject:user.uid];

Who ca tell why??
![enter image description here][1]


  [1]: http://i.stack.imgur.com/tHqw0.png