Hello,
I'm sorry, but I don't really understand. I've tried a lot of things to fix the problem, but it still doesn't work.
My EEG reference was indeed ‘Average’, which I changed afterwards. I wanted to establish causality on evoked potentials, I don't know if that's possible in itself, but it could potentially limit the size of my data. So I tried to take my EEG from 0 to 100ms, the correlation and coherence tests work, but when I move on to causality, the same problem comes back...
I can send you the data so you can try it if you wish. My EEG has 128 channels.
Kind regards,
A