Virtual device error

Can anyone point me in the right direction to trace this error ?

Virtual Devices Error Error #931: updateScene failed on scene 1496493063. Trace:
Traceback (most recent call last):
File "plugin.py", line 328, in updateScene
File "plugin.py", line 269, in _deleteDevice
NameError: global name 'dev' is not defined

Thank you

[matt (support)]

Stop the Indigo Server (Indigo->Stop Server menu item), and then restart it. Does the problem persist?

Just stopped / started.

I will let you know

Thanks
Ian

I think that sorted it, thanks Matt