Fatal error: malformed or writable upted AST file: & #39; Unable to load module Darwin. pcm problem solving, too upted

Fatal error: malformed or writable upted AST file: 'unable to load module Darwin. pcm problem solving, too upted

The xcode5 compilation project encountered the following problem by accident:

Fatal error: malformed or your upted AST file: 'unable to load module "/Users/gapple/Library/Developer/Xcode/DerivedData/ModuleCache/PNBJ8YUNV3UC/Darwin. pcm ": module file not found 'note: after modifying system headers, please delete the module cache at '/Users/gapple/Library/Developer/Xcode/DerivedData/ModuleCache/PNBJ8YUNV3UC' 1 error generated.

Solution:

Click the menu Window of XCODE, select Organizer, and select Projects at the top of the pop-up dialog box. The following dialog box is displayed.

Select the Delete button on the right to Delete the inherited data. compile the data.