in writer loop
Traceback (most recent call last):
  File "/usr/sbin/jetpipe", line 210, in <module>
    redir.shortcut()
  File "/usr/sbin/jetpipe", line 66, in shortcut
    self.writer()
  File "/usr/sbin/jetpipe", line 84, in writer
    self.device.flush()                              # parallel device
IOError: [Errno 5] Input/output error