Why is my app crashing due to an overreleased NSPathStore2?

My app crashes with this (after the end of viewDidLoad):

-[NSPathStore2 release]: message sent to deallocated instance 

A similar issue was reported in this question, but I'm not using any explicit NSPathStore2 instances, so I don't know where this is coming from. I know this is a 开发者_StackOverflow社区memory-related issue, but I'm not sure how to track it down

What could be causing this overreleased NSPathStore2? What is an NSPathStore2?

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NSPathStore2 is an internal object used by NSString for path work. You're almost certainly overreleasing an NSString somewhere in your code. The static analyzer will probably show you where: assuming you're using Xcode 4, choose Analyze from the Product menu.