[Freesurfer] number of seeds in fcseedcor

Hi Freesurfer experts,

I was wondering how many seeds we can use in fcseedcor command? I have more than 100 seeds and when I use all those seeds in the below command, I get this error:

Command: fcseedcor -s $subj -fsd rest -seed 1.dat -seed 2.dat -xreg global.waveform.dat 1 -xreg vcsf_mean.dat 1 -xreg wm_mean.dat 1 -xreg mcprextreg 6 -hpf .01 -lpf 0 -nskip 0 -sim 1000 -o cor_all.dat

Error: Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 1.768795e-22.

In ^COperation terminated by user during fast_glmfit (line 35)

Appreciate your help, Mona

Zahra (Mona) Nasiriavanaki, M.D. Postdoctoral Research Fellow Department of Psychiatry | MGH/HMS 149 13th Street, 149-2615 Boston, MA, USA, 02129