I got the following console error on iOS7 (<= iOS6 works):
: **\* Assertion failure in -[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:animation:], /SourceCache/UIKit/UIKit-2872.3/UIWindowController.m:223
: Warning: Attempt to dismiss from view controller while a presentation or dismiss is in progress!
I got the following console error on iOS7 (<= iOS6 works):