Dear SPM experts, I set up a DCM for EEG in ERP mode in SPM12b (finished: data and design, electromagnetic model and the neuronal model). I did all these steps as they were described in the manual. When I try to estimate the DCM I get the following error message in SPM12b and SPM8: Error using ft_read_vol (line 43) file 'C:\Users\Rosjat\Documents\MATLAB\spm\spm12b\canonical\single_subj_T1_EEG_BEM.mat' does not exist I looked up the folder and the missing file wasn't missing at all. How can I solve this problem? Best, Nils __________________ Dipl.-Math. Nils Rosjat Universität zu Köln Biozentrum Zülpicher Straße 47b 50674 Köln [log in to unmask]