nu_correct trying to process nii file directrly

[yassinebha]

when preprocessing nifti files with opt.slice_timing.flag_nu_correct = true, makes nu correct process nii file directly without converting them to minc.
Something went bad ... the job has FAILED ! The last error message occured was : The call to NU_CORRECT failed, the error message was: [nu_evaluate] [yassinebha@pin:/mnt/home_sq/yassinebha/git] [2017-09-05 16:30:28] /opt/minc/1.9.15/bin/mincstats -quiet -biModalT /tmp/psom_tmp_slice_timing_HCP100307_sess1_rest1RL_115773_vol.nii [nu_evaluate] [yassinebha@pin:/mnt/home_sq/yassinebha/git] [2017-09-05 16:30:28] /opt/minc/1.9.15/bin/minccalc -clobber -verbose -quiet -byte -expression 'if(A[0]>=){out=1}else{out=0}' /tmp/psom_tmp_slice_timing_HCP100307_sess1_rest1RL_115773_vol.nii /var/tmp/nu_evaluate_2299//nuc_auto_mask.mnc File /usr/local/niak/bricks/fmri_preprocess/niak_brick_slice_timing.m at line 615