file:///Users/xmg/Desktop/xiangmu~Bsbdejie/BaisibudejieTheSecondtime/BaisibudejieTheSecond/BaisibudejieTheSecond/AppDelegate.m: warning: Missing file: /Users/xmg/Desktop/xiangmu~Bsbdejie/BaisibudejieT

warning: Missing file: is missing from working copy

fatal error: file '….h' has been modified since the precompiled header was built

的解决办法

http://stackoverflow.com/questions/5897232/how-to-remove-properly-a-file-on-xcode-4-with-svn-version-control

To prevent the error from occurring in the first place, always "Delete" through Xcode, or, through your SVN client (but, if you delete it through your SVN client you'll still have to delete the missing reference in Xcode - so you might as well just delete it in Xcode to being with).

http://stackoverflow.com/questions/7071523/xcode-4-1-fatal-error-stdlib-modified-since-the-precompiled-header-was-built

I had this exact same problem after applying the recent Xcode patch. I ended up deleting the DerivedData folder for my app at:

~/Library/Developer/Xcode/DerivedData/{project name + gobly-gook}

This directory contains built products and indexes for the project. It is OK to delete it because it only contains items generated by Xcode. Xcode will regenerate everything next time the project is opened.