solved. The image was used as the button background. The problem was not a missing image. It was that the button was placed on the screen. It was set as the subtitle of the TabBarViewController panel. I used the tab height to calculate the center of the button. I replaced this with hard coded values ββto fix the problem.
Why did this happen only with the iPhone 3G and only with the distribution? I'm really not sure, but I was able to use remote logging in the TestFlight SDK to find out that the button position is off at> 400 pixels.
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