KeyError: "There is no item named 'SYSTEM/build.prop' in the archive"

[camrymod]

PLS HELP!

File "/home/flip/iocean/tools/releasetools/ota_from_target_files", line 889, in main(sys.argv[1:]) File "/home/flip/iocean/tools/releasetools/ota_from_target_files", line 857, in main WriteFullOTAPackage(input_zip, output_zip) File "/home/flip/iocean/tools/releasetools/ota_from_target_files", line 382, in WriteFullOTAPackage metadata = {"post-build": GetBuildProp("ro.build.fingerprint", input_zip), File "/home/flip/iocean/tools/releasetools/ota_from_target_files", line 496, in GetBuildProp bp = z.read("SYSTEM/build.prop") File "/usr/lib/python2.7/zipfile.py", line 869, in read return self.open(name, "r", pwd).read() File "/usr/lib/python2.7/zipfile.py", line 892, in open zinfo = self.getinfo(name) File "/usr/lib/python2.7/zipfile.py", line 859, in getinfo 'There is no item named %r in the archive' % name) KeyError: "There is no item named 'SYSTEM/build.prop' in the archive"

in build.prop ro.build.description=user 4.2.1 JOP40D eng.scm.1372640270 test-keys