Dear AFNI experts, I am trying to run 3dttest++ using the following script

3dttest++ -prefix cntrl_vs_patients \
-setA controls \
sub1 datafile_subj581+tlrc'[5]' \
sub2 datafile_subj568+tlrc'[5]' \
sub3 datafile_subj540+tlrc'[5]' \
sub4 datafile_subj465+tlrc'[5]' \
sub5 datafile_subj443+tlrc'[5]' \
sub6 datafile_subj398+tlrc'[5]' \
sub7 datafile_subj361+tlrc'[5]' \
sub8 datafile_subj342+tlrc'[5]' \
sub9 datafile_subj341+tlrc'[5]' \
sub10 datafile_subj340+tlrc'[5]' \
-setB patients \
sub27 datafile_subj459+tlrc'[5]' \
sub28 datafile_subj402+tlrc'[5]' \
sub29 datafile_subj084+tlrc'[5]' \
sub30 datafile_subj450+tlrc'[5]' \
sub31 datafile_subj446+tlrc'[5]' \
sub32 datafile_subj699+tlrc'[5]' \
sub33 datafile_subj082+tlrc'[5]' \
sub34 datafile_subj313+tlrc'[5]' \
sub35 datafile_subj021+tlrc'[5]' \
sub36 datafile_subj008+tlrc'[5]' \
-covariates covar_fl.txt

and covariates file contents

subject age
sub1 46
sub2 47
sub3 33
sub4 26
sub5 37
sub6 46
sub7 30
sub8 32
sub9 35
sub10 32
sub27 29
sub28 23
sub29 30
sub30 32
sub31 26
sub32 41
sub33 43
sub34 31
sub35 24
sub36 23

However, I am getting the following error

++ 3dttest++: AFNI version=AFNI_2011_12_21_1014 (Apr 18 2014) [64-bit]
++ Authored by: The Bob++
++ Covariates file: 2 columns, each with 20 rows
+ Covariate column labels: subject;age
+ Found 1 numeric column: age
++ no mask ==> processing all 7221032 voxels
++ 2-sample test: '-AminusB' option is assumed
++ 2-sample test: results will be controls - patients
++ loading covariates
sub28' in covariates filel '
sub29' in covariates filel '
sub30' in covariates filel '
sub31' in covariates filel '
sub32' in covariates filel '
sub33' in covariates filel '
sub34' in covariates filel '
sub35' in covariates filel '
sub36' in covariates filel '
sub2' in covariates fileel '
sub3' in covariates fileel '
sub4' in covariates fileel '
sub5' in covariates fileel '
sub6' in covariates fileel '
sub7' in covariates fileel '
sub8' in covariates fileel '
sub9' in covariates fileel '
sub10' in covariates filel '
** FATAL ERROR: Cannot continue past above ERRORs
** Program compile date = Apr 18 2014

I have tried this without the covariates file and the script works fine, however there is some error that I cannot seem to see. Any help would be greatly appreciated. Thank you very much.

dominic