Signal only works in main thread

[RVince]

I am instantiating an SSH client class using this class:

http://www.goldb.org/sshpython.html

With the following code:

        sSHController = SSHController('xxx', 'root', 'password', '#')
        sSHController.login()

Whereupon, at login(), it fails with a :

ValueError: signal only works in main thread

I'm at a complete loss here. Can someone please point me in the right
direction to solving this?   Thanks,
RVince