Hi Francois,
I am having the same issue mentioned above. I have a folder with (.eeg),(.vhdr), and (.vmrk). When I used the “Review raw file” function on the drop down menu, I could not read all three files at the same time because the drop down menu did not allow that. I also tried using the "MEG/EEG: 4D-Neuroimaging/BTI(.*)" option to read all three files at the same time, but it gave me the following error: “No config file”. Please let me know how I can resolve this issue, your advice is greatly appreciated.
Thank you,
Wasuwat