Hi, check the content of the file: <subject.ica>/fix/logMatlab.txt which should contain the exact matlab error line in features extraction. Hope it helps, Ludovica — Ludovica Griffanti, PhD Analysis Postdoctoral Research Assistant Wellcome Centre for Integrative Neuroimaging (WIN) Oxford Centre for Functional MRI of the Brain (FMRIB) Nuffield Department of Clinical Neurosciences, University of Oxford John Radcliffe Hospital Oxford, OX3 9DU, UK email: [log in to unmask] > On 15 Aug 2017, at 9:03 am, SUBSCRIBE FSL US.Choi <[log in to unmask]> wrote: > > I add some details. > I have checked the error point and found that the start of feature extraction could be a problem. > > I think that the error message "Subscripted assignment dimension mismatch." was resulted from some matlab codes (compiled matlab codes). > > Does any one knows how to fix this problem ?