Paul: wrote

Distilled the info down to it's minimum and confirmed it works on a fresh BDI-4 install. I did notice that the setting of DISPLAY was not needed as the -X flag should automatically set the variable.

Just to make sure we're on the same wavelength, I spoke of two different approaches: (1) forwarding X11 communication through ssh, in which case one does *not* need to set up *either* the local xhost list (which will be ignored because the X11 channel isn't being used) or the remote DISPLAY variable (which is set automagically by the remote sshd during the logon handshake to a pseudodisplay number; on my BDI-4.30 machine it's DISPLAY=localhost:10.0; your mileage may vary). (2) normal X11 communication via the X11 channel, in which case one needs to set up *both* the local xhost list (otherwise the remote X11 client will be ignored) and the remote DISPLAY variable (so the X11 client knows who to talk to). If you're invoking ssh -X or ssh -Y you're using the first approach, which is preferred for security reasons. I spoke of the second approach to help those who couldn't get X11Forwarding to work for their EMC installation because of the untrusted X11 client problem. Regards, Kent