imx6 ltib编译出现的问题

各位我的ubuntu是12.04 64位版本，也打了补丁，按照i.MX6 Ubuntu12.04上编译LTIB这个文档来操作，最后执行./ltib的时候出现如下错误，请帮忙看看。谢谢！
Processing platform: Host support packages
============================================
using /mnt/hgfs/share/imx6q/ltib/config/platform/host/ltib.preconfig

Processing: fake-provides
===========================

Processing: mkspooflinks
==========================
Build path taken because: directory build, no prebuilt rpm,
Testing network connectivity
OK GPP:

Try mkspooflinks-3.4.tar.gz from the GPP
ERROR: md5sum mismatch, re-naming /opt/freescale/pkgs/mkspooflinks-3.4.tar.gz to /opt/freescale/pkgs/mkspooflinks-3.4.tar.gz.bad, please re-try
Can't get: mkspooflinks-3.4.tar.gz at ./ltib line 802.
Died at ./ltib line 1392.
traceback:
main::build_host_rpms:1392
  main::host_checks:1447
   main:554

重新运行一遍ltib试试，网络不好会有这样的问题。