reapir.exe error

Traceback (most recent call last):
  File "repair.py", line 206, in <module>
  File "updateSelf.pyc", line 137, in UpdateSelf_nt
  File "subprocess.pyc", line 672, in __init__
  File "subprocess.pyc", line 882, in _execute_child
WindowsError: [Error 2] The system cannot find the file specified