update.zip error

Install system fs image: out/target/product/dnp725/system.img
out/target/product/dnp725/system.img+ total size is 128553216
Package target files: out/target/product/dnp725/obj/PACKAGING/target_files_intermediates/cyanogen_dnp725-target_files-eng.root.zip
Package OTA: out/target/product/dnp725/cyanogen_dnp725-ota-eng.root.zip
./build/tools/releasetools/ota_from_target_files -v \
   -p out/host/linux-x86 \
           -k build/target/product/security/testkey \
           --backup=true \
   --override_device=dnp725 \
           out/target/product/dnp725/obj/PACKAGING/target_files_intermediates/cyanogen_dnp725-target_files-eng.root.zip out/target/product/dnp725/cyanogen_dnp725-ota-eng.root.zip
unzipping target target-files...
  running:  unzip -o -q out/target/product/dnp725/obj/PACKAGING/target_files_intermediates/cyanogen_dnp725-target_files-eng.root.zip -d /tmp/targetfiles-ku92TS
Traceback (most recent call last):
  File "./build/tools/releasetools/ota_from_target_files", line 813, in <module>
    main(sys.argv[1:])
  File "./build/tools/releasetools/ota_from_target_files", line 768, in main
    OPTIONS.info_dict = common.LoadInfoDict(input_zip)
  File "/home/tablet/source/build/tools/releasetools/common.py", line 136, in LoadInfoDict
    makeint("userdata_size")
  File "/home/tablet/source/build/tools/releasetools/common.py", line 131, in makeint
    d[key] = int(d[key], 0)
ValueError: invalid literal for int() with base 0: '0fc80000'
make: *** [out/target/product/dnp725/cyanogen_dnp725-ota-eng.root.zip] Error 1