Hello Paul,
thank you for creating this issue and taking the time to describe the problem. Sounds like a new problem that differs to the one from Benjamin:
If you can use python scripts and you can see LAN connections from the VISA runtime, it is clear that your VISA runtime seems to work.
Also if you can use GPIB ports in own python scripts, the VISA driver for the GPIB adapter or card seems to be ok.
I guess you are using SweepMe! 1.5.8.8 if you just recently started to use SweepMe! and made an update.
You wrote that you have used the script gpib_pyvisa.py
Did you run it in your own Python environment or did you run it with the Python Script Tool?
You can go to menu “Tools” → “Python script” to run these scripts within the Python environment of the SweepMe! executable:
Please test the scripts gpib_pyvisa.py and visa_debug_info.py.
If you run them, the output is shown in the Debug widget (key F2).
Can you send the output. It will be interesting to see which VISA runtime is detected and whether the script can find GPIB ports. You can also modify the script to show all VISA resources (not just GPIB).
Maybe this already helps us to figure out.
You could also cross-check whether there is any python script or other application that is maybe already holding direct accces to the GPIB ports.
If this does not give us a clue, I can offer you to meet in a video meeting and debug it together as this is a severe issue that should not happen and we have big interest to figure out what is going on.
Thanks a lot and best
Axel