关于autopep8在windows下的报错

Emacs-general
1 
以下是我python配置
;;seting python
;;(setenv "IPY_TEST_SIMPLE_PROMPT" "1")
(setq elpy-rpc-python-command "python")

;; For interactive shell
(setq python-shell-interpreter "ipython"
      python-shell-interpreter-args "-i --simple-prompt")
;;start  elpy
(setq elpy-rpc-virtualenv-path 'current)
(elpy-enable)

;;py-autopep8
;;(require 'py-autopep8)
(add-hook 'python-mode-hook 'py-autopep8-enable-on-save)


以下是我的报错，不知道为什么只要保存文件就会报错

Debugger entered--Lisp error: (error "invalid rcs patch or internal error in py-autopep8-bf--apply-rcs-patch")
  signal(error ("invalid rcs patch or internal error in py-autopep8-bf--apply-rcs-patch"))
  error("invalid rcs patch or internal error in py-autopep8-bf--apply-rcs-patch")
  py-autopep8-bf--apply-rcs-patch(#<buffer *autopep8 patch*>)
  py-autopep8-bf--apply-executable-to-buffer("autopep8" py-autopep8--call-executable nil "py")
  py-autopep8-buffer()
  run-hooks(before-save-hook)
  basic-save-buffer(t)
  save-buffer(1)
  funcall-interactively(save-buffer 1)
  call-interactively(save-buffer nil nil)
  command-execute(save-buffer)