It keeps saying:
fatal error: file \'/Applications/Xcode5-DP5.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/includ
I was having the same problem. I did SHFT+CMD+K and tried to run,again the error appeared. My error pointed to the NSJSONSerialization header file. So what I did is deleted the files in ModuleCache and the project seems working now. I had changed my code which used NSJSonSerialization thinking it to be wrong, and project started working with the code also :)
To delete the files -- Click on 'Go' in the Desktop and then 'Go to folder' then type the folder path (Eg : 'Library/.…./ModuleCache') and delete all the files.
Regards, ASK