what was your original mri_glmfit-sim command?

mri_glmfit-sim --glmdir GLM --sim perm 20000 2 perm.abs.2  --sim-sign abs --overwrite

 

Then, I tried no-sim on the generated csd file with the following command: 

 mri_glmfit-sim --cwpvalthresh 0.99 --glmdir GLM --no-sim --overwrite /csd/perm.abs.2.j001-osgm.csd