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If I'll run my app on the iOS-Simulator this error comes up:

fatal error: file '/Users/Patti/Desktop/Picxxr/Picxxr/Picxxr-Prefix.pch' has been modified since the precompiled header '/Users/Patti/Library/Developer/Xcode/DerivedData/Picxxr-gcakojkodoomqcertyparosqruxs/Build/Intermediates/PrecompiledHeaders/Picxxr-Prefix-dpxcuqgwybsqepgyjnhyqvzeyjhk/Picxxr-Prefix.pch.pch' was built

Does somebody knows why?

Dev_P
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  • Are suggestions in [this question](http://stackoverflow.com/questions/14793329/fixing-file-project-pch-has-been-modified-since-the-precompiled-header-was-bui) not working for you? – insys Mar 30 '14 at 19:18

1 Answers1

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You have altered your precompiled header file in some way. This file lists global #import sand #define s to be included in all files in your project - usually used for importing UIKit and Foundation, though you can add other stuff. Since this makes all the files in your project out of date, it means you need to clean the derived data folder (Option Apple+Shift -> K), then rebuild the project - this will regenerate the whole project and should fix the problem.

Rich Tolley
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