Thank you for your reply Francois.
The following pipeline editor was how I used the "Add EEG positions" process.
It comes after the "set channels type" process specifying EOG channels and before the "band-pass" process of 1 - 40 Hz.
I then followed the "reset options" button and independently selected the "add EEG positions" process which looked like below.
Clearly the process options were different. So I put one of my files through this process and it worked without issues. Then I incorporated this NEW process within the above pipeline after deleting the old "add EEG positions" process. Running this new pipeline editor with the new process worked well. So I think it must have been just a matter of updating this specific process.
I did try this method yesterday however back then the process options did not look like what I am showing you today - so your code update must have solved the issues.
After incorporating the NEW process into the following pipeline editor below I now have a new "input options" - circled in red. What does this mean?? I could not find this in the Brainstorm Tutorial.
