I want to obtain aparc.stats for pial instead of white matter surface area. I read that I therefore should adjust mris_anatomical_stats. However, when I run this command separately, the following error occurs: 

cannot allocate memory

Then I tried to put autorecon3 -parcstats in front in this command, but now it says:

Flag mris_anatomical_stats unrecognized.

Any help would be greatly appreciated,

Anita