Sadly, I wasn't able to find any zombies in instruments.

Just to make sure that I am doing this right, the step to find zombies are.

1.  In Xcode, Product -> Scheme -> Edit Scheme
2.  Choose Debug -> Diagnostics -> Turn on "Enable Zombie Objects"
3.  Make sure Profile is run in Debug scheme.
4.  Open up instruments, choose the zombie template.
5.  Do a bunch of stuff in the app until the "Zombie" dialog shows up.

Please let me know if this is *NOT* the way to find zombie in Xcode.

Herman

On 23 Sep 2014, at 17:19, Jens Alfke wrote:

On Sep 23, 2014, at 11:31 AM, Herman Chan <herman...@gmail.com> wrote:

Hi all,

Another mysterious iOS 8 crash I am getting, here is the crash log.

Thread : Crashed: com.apple.main-thread
0  libobjc.A.dylib                0x32bfbf46 objc_msgSend + 5
1 UIKit 0x289ba531 -[UIWindow _updateInterfaceOrientationFromDeviceOrientation:] + 152 2 CoreFoundation 0x254d44a1 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

Run your app with zombies enabled to find out what object UIWindow was trying to call. It might be one of your objects that you've accidentally over-released (or it might be a UIKit object, in which case this is probably an iOS bug.)

—Jens
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