I ran the mri_glmfit with DOSS, followed by the mri_glmfit-sim(running with --bg option). I have 4 contrasts, but only the first one has some files of corrected results(i.e. mc-z.neg.3.sig.cluster.summary). I donot know why. So I upload the log file in the attachment. However, previously I ran mri_glmfit by DODS, and mri_glmfit-sim with --bg option.All the contrasts have corrected results.