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help with error message

edited March 2013 in Cocoa / Cocoa Touch
I'm pretty much a novice at this but I have been working away on an app for a while. I have been running it on my iPhone 5 and then I updated 1 picture and tried to run it and got this error message:
 "error: PCH file built from a different branch ((clang-425.0.24)) than the compiler ((clang-425.0.27))

1 error generated."

Can anyone tell me what this means?

I even tried going back to a previous snapshot but that would no longer work either. The things that changed are: 1 picture replaced, with the same name. I also downloaded some of the other libraries, the 4.3 and 5.1 libraries, as well as the 4.3, 5 and 5.1 simulators. Before that I just had the basic 6.1 files. I didn't change anything else but the build fails. 

My app is fairly simple, a single table view leading to a bunch of scrolling page views.

Thanks for any help you can give.


  • Do a "clean" (Product > Clean from the menu bar in Xcode), that should force the compiler to rebuild the PCH file the next time it needs it. Hope this helps!
  • Yes! This makes everything work just fine. Thanks very much. I was totally stuck. I think I have a vague idea of why this worked.
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