Malformed or corrupted AST file: ' Unable to load module

This is a problem with different versions of Xcode, and when we open the project with Xcode6 and then open it with XCODE5, we get an error.

Fatal error:malformed or corrupted AST file: ' Unable to load module '/users/xxx/library/developer/xcode/deriveddata/modu LECACHE/XYZYIE6ZV0OP/DARWIN.PCM ": File not found ' Note:after Modifying system headers, click Delete the module cache at '/users/me/library/developer/xcode/deriveddata/modulecache/xyzyie6zv0op ' 1 error generated.

The workaround is simple:

You only need to clear the inherited Data folder. To do this: go to the Xcode window, select Organizer->projects, then select Project with the problem and click Delete button to delete derived data.

Recompile the project.

Malformed or corrupted AST file: ' Unable to load module