I am trying to preproc-sess my data (fwhm 1.5, per-run, native space) with this command

preproc-sess -fwhm 1.5 -fsd bold -per-run 

I expect it to generate fmcpr.sm1.5.nii.gz for each run of my dataset.  Although preproc-sess finishes without any error, it only generates fmcpr.nii.gz and when I run selxavg3-sess, it returns an error that 

> cannot determine format of 
> test/bold/013/fmcpr.sm1.5

and exits.  Would you tell me why those files are not generated? 

Regards

--
Shahin Nasr

PhD in Cognitive Neuroscience
Martinos Imaging Center, MGH
Harvard Medical School