title: Xcode not compiling any project? 'clang failed with exit code 255'
body: <p>Hey all basically what the title says, I was working on my project with no issues and then all of the sudden it just stopped compiling. The only thing that led up to this was one of my .m files turned red when I accidentally renamed it and I had to delete it and replace it but that was it. I searched around and can confirm it is not my Bundle Id that is causing the issue. I also ran it with llvm-gcc and got this 'llvm-gcc-4.2 failed with exit code 1' and help? Thanks!</p>
  
  <p>ETA:
  This is also what it says in the little error box:</p>
  
  <p>clang: error: unable to execute command: posix_spawn failed: Resource temporarily unavailable
  clang: error: clang frontend command failed due to signal 1 (use -v to see invocation)
  Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang failed with exit code 255</p>