Why python omni-completion work incorrect in vim7.0e1 and vim7.0e2?

[zhangyi]

Hi

  pythoncomplete works fine in vim7.0e, but in vim7.0e1 and vim7.0e2, when I
press C-x C-o, error reported and no completion list displayed.
  I use Same compile environment and command under Win XP SP2.

Best Regards.

Zhang Yi