Dear Fidan, It sounds like there are no channel locations and fiducials in your dataset. Are you applying these steps to your own data or data from the tutorial? If it's the former I suggest you load channel locations or assign default locations before running montage. Best, Vladimir On Thu, Oct 20, 2016 at 9:48 AM, Fidan Fidan <[log in to unmask]> wrote: > Hi dear all, > I am a newcomer in spm. I am doing preprocessing steps of EEG and for > learning I am replicating the steps explained in spm12 manual, page 401 > (Chapter 42, Multimodal, Multisubject data fusion). I am hoping you can > assist me with the error I faced at the Montage step. > ----------------------------- > Failed 'Montage' > Error using subsref > Reference to non-existent field 'fid'. > In file "D:\FE\Toolbox_spm12\@meeg\subsref.m" (v6600), function "subsref" > at line 122. > In file "D:\FE\Toolbox_spm12\spm_eeg_montage.m" (v6398), function > "spm_eeg_montage" at line 422. > In file "D:\FE\Toolbox_spm12\config\spm_cfg_eeg_montage.m" (v5377), > function "eeg_montage" at line 145. > > The following modules did not run: > Failed: Montage > ----------------------------- > > Best regards > Fidan >