iPhone app crashing after a quick stop/restart

So my app is crashing when the app is stopped and then restarted really fast here's the stack trace:

It looks like the UITabBar is trying to access a view that is null, hence the exc_bad_access. I'm confused as to why it only happens on the restart, also my tabbar is created fully in IB. Any thoughts would be great.

Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x00000000 Crashed Thread: 0

0x30183f24 objc_msgSend + 24 1 Inspirational Quotes 0x00009900 0x1000 + 35072

2 UIKit 0x338c37b4 -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 212

3 UIKit 0x338c36cc -[UITabBarController transitionFromViewController:toViewController:] + 32

4 UIKit 0x338c2d38 -[UITabBarController _setSelectedViewController:] + 248

5 UIKit 0x339cbc44 -[UITabBarController setSelectedViewController:] + 12

6 UIKit 0x339cc888 -[UITabBarController _tabBarItemClicked:] + 308

7 CoreFoundation 0x35eada3c -[NSObject(NSObject) performSelector:withObject:withObject:] + 20

8 UIKit 0x3384af18 -[UIApplication sendAction:to:from:forEvent:] + 128

9 UIKit 0x3384ae80 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 32

10 UIKit 0x33ab1ed8 -[UITabBar _sendAction:withEvent:] + 416

11 CoreFoundation 0x35eada3c -[NSObject(NSObject) performSelector:withObject:withObject:] + 20

12 UIKit 0x3384af18 -[UIApplication sendAction:to:from:forEvent:] + 128

13 UIKit 0x3384ae80 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 32

14 UIKit 0x3384ae48 -[UIControl sendAction:to:forEvent:] + 44

15 UIKit 0x3384aa98 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 528

16 UIKit 0x3388f338 -[UIControl sendActionsForControlEvents:] + 16

17 UIKit 0x33aae560 -[UITabBar(Static) _buttonUp:] + 108

18 CoreFoundation 0x35eada3c -[NSObject(NSObject) performSelector:withObject:withObject:] + 20

19 UIKit 0x3384af18 -[UIApplication sendAction:to:from:forEvent:] + 128

20 UIKit 0x开发者_StackOverflow社区3384ae80 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 32

21 UIKit 0x3384ae48 -[UIControl sendAction:to:forEvent:] + 44

22 UIKit 0x3384aa98 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 528

23 UIKit 0x3384b5c4 -[UIControl touchesEnded:withEvent:] + 452

24 UIKit 0x3383cea8 -[UIWindow _sendTouchesForEvent:] + 580

25 UIKit 0x3383c4dc -[UIWindow sendEvent:] + 388

26 UIKit 0x3381fc94 -[UIApplication sendEvent:] + 444

27 UIKit 0x3381f3ac _UIApplicationHandleEvent + 6816

28 GraphicsServices 0x35262c80 PurpleEventCallback + 1040

29 CoreFoundation 0x35e9a5c4 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION + 22

30 CoreFoundation 0x35e9a582 __CFRunLoopDoSource1 + 158

31 CoreFoundation 0x35e8c82e __CFRunLoopRun + 574

32 CoreFoundation 0x35e8c504 CFRunLoopRunSpecific + 220

33 CoreFoundation 0x35e8c412 CFRunLoopRunInMode + 54

34 GraphicsServices 0x35261d1c GSEventRunModal + 188

35 UIKit 0x33865574 -[UIApplication _run] + 580

36 UIKit 0x33862550 UIApplicationMain + 964

37 Inspirational Quotes 0x00002b96 0x1000 + 7062

38 Inspirational Quotes 0x00002b0c 0x1000 + 6924

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You got the exception exc_bad_access, I think your nib file is not connected properly.Connect your tab bar with a tab bar controller.

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To Avoid from crashing use Exception Handling, here is the following links which may help you.

throwing an exception in objective-c/cocoa

http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocExceptionHandling.html