malformed or corrupted AST file: 'Unable to load module XXXXX 解决办法.

X-Code7 上 遇到问题.

fatal error: malformed or corrupted 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. 

解决办法:

1-> 点击x-code.

2->选择Window 按钮;

3->选择Projects按钮;

4->选择你的项目, 然后点击Delete按钮清除数据;