On Sep 16, 2015, at 11:46 AM, Rob Groner <rgroner at RTD.com> wrote: > I then added -DDDD to the command....and then it failed, giving me the same "Can't claim USB" message. Why does adding the debug commands cause a problem? It doesn't write a PID file in debug mode: https://github.com/networkupstools/nut/issues/168