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I’m having some strange behaviour ocurring when I try to run my Iphone app without using Xcode. If I run it by choosing Build & Run in Xcode it runs just fine, but if I do it by disconnecting the USB cable and tapping on the app on the Iphone, it crashes, yielding an unhelpful crash log.
Is there any difference between these 2 scenarios that could be causing this behaviour?
The difference is that if you run it via Xcode, the debugger is attached and a lot of restrictions are not applied. For example, if an app starts up it must respond with a few seconds otherwise it’s killed. If you run it with the debugger, that restriction is lifted. Same when exiting: if you hit the home button (on iOS < 4 or iOS >= 4 without multitasking) then an app gets five seconds to exit. Not so with the debugger attached.
It might help if you post the error message from the crash log.