Single stepping until exit from function __NSThreadPerformPerform, which has no line number information.
===

I search too many regarding this problem but i didn't get right solution.
I am unable to get the actual problem of this error. My program terminate after this error. When i debug my program application doesn't crashes. I think that it should be because of multiple thread. Actually i am using ASIHTTPREQUEST for server request and response.
 
$This is my error

         Single stepping until exit from function -[UIViewController view], 
        which has no line number information.
        Single stepping until exit from function -[UIViewController viewControllerForRotation], 
        which has no line number information.
        Single stepping until exit from function -[UIViewController _visibleView], 
        which has no line number information.
        Single stepping until exit from function 
        -[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:], 
        which has no line number information.
        Single stepping until exit from function 
        -[UIViewController presentViewController:withTransition:completion:], 
        which has no line number information.
        Single stepping until exit from function 
        -[UIViewController presentViewController:animated:completion:], 
        which has no line number information.
        Single stepping until exit from function 
        -[UIViewController presentModalViewController:animated:], 
        which has no line number information.
        Single stepping until exit from function -[NSObject performSelector:withObject:], 
        which has no line number information.
        Single stepping until exit from function -[NSObject performSelector:withObject:], 
        which has no line number information.
        Single stepping until exit from function __NSThreadPerformPerform, 
        which has no line number information.

 