Guillaume et al., What be happening 'ere then? Richard ??? Undefined function or method 'mat2file' for input arguments of type 'struct'. Error in ==> file_array.subsasgn>subfun at 125 mat2file(sobj,dat,va{:}); Error in ==> file_array.subsasgn at 63 subfun(sobj,double(dat),args{:}); Error in ==> spm_write_plane at 33 V.private.dat = subsasgn(V.private.dat,S,dat); Error in ==> spm_write_vol at 83 V = spm_write_plane(V,Y,':'); Error in ==> spm_write_filtered at 57 Vo = spm_write_vol(Vo,Y); ??? Error while evaluating uicontrol Callback