Comment #6 on issue 22 by janne.t.harkonen: SSHLibrary.Execute Command ---- AttributeError: 'NoneType' object has no attribute 'exec_command'
http://code.google.com/p/robotframework-sshlibrary/issues/detail?id=22
Have you managed to log in successfully before the failure? How have you imported the library? Are you using one or multiple connections?(I am shooting in the dark here, since I have no idea how to reproduce this bug)
