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Editorial Team
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Asked: 2026-05-25T10:49:19+00:00

Working on an iPhone app for my company. Recently upgraded to XCode 4 (But

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Working on an iPhone app for my company. Recently upgraded to XCode 4 (But kept an installation of XCode 3 in a separate folder).

The application, if compiled and run under XCode 3, runs stable and doesn’t crash.
If compiled and run under XCode 4, will run, open to an about screen, and will allow me to navigate to one of the other pages (a note-taking page) via the tab bar. But if I click on the other tab (a page containing almost nothing but a MKMapView), it crashes every time.

The exception is my iPod Touch, running iOS 5. That runs fine, so it seems the issue is XCode 4 on iOS4 (4.3.5 is what I’m currently testing on).

The crash log is here: http://pastebin.com/p0sXqbSZ

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1 Answer

  1. Editorial Team

    If you’re using Xcode 4.2 and iOS 5 SDK beta 5 or later, then you may be running into a bug in the SDK. See the accepted answer to this question.

    There are workarounds. Here’s the simplest one, first suggested by Kreuters:

    @implementation UIImage (initWithCoder)

- (id)initWithCoder:(NSCoder *)aDecoder
{
     return nil;
}

@end

    If you can reproduce the bug in Xcode 4.2 and iOS 5 SDK beta 7, you should file a bug report.

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