from asf_avrstudio5_interface import PythonFacade\r
        except ImportError:\r
                print "Fatal Error: The ASF project generator is missing."\r
-               sys.exit()\r
+               return 1\r
 \r
        p = PythonFacade(os.path.abspath(__file__))\r
 \r
        p.generate_extension_cache_files(sys.argv[1])\r
 \r
        print "[Project Generator] Cache files created."\r
+       return 0\r
 \r
 \r
 if __name__ == "__main__":\r