Dear spm'ers, I use spm2, and Check Reg used to work without any problem until a couple of days ago. What can be the reason that now Check Reg loads into the Graphics window only the first of the chosen .img files and, regardless of how many were chosen, returns the following message: ??? Error using ==> feval Undefined function 'spm_ov_dwprofile'. Error in ==> /usr/local/spm2/spm_orthviews.m (addcontext) On line 1279 ==> feval(['spm_ov_', st.plugins{k}], ... Error in ==> /usr/local/spm2/spm_orthviews.m (addcontexts) On line 713 ==> cm_handle = addcontext(ii); Error in ==> /usr/local/spm2/spm_orthviews.m On line 360 ==> addcontexts(varargin{1}); Error in ==> /usr/local/spm2/spm_check_registration.m On line 40 ==> spm_orthviews('AddContext',handle(ij)); Error in ==> /usr/local/spm2/spm_check_registration.m On line 15 ==> spm_check_registration(images); ??? Error while evaluating uicontrol Callback. Thanks for hints, Florian