I have preprocessed my functional data using the FsFast function preproc-sess and am now attempting to set up contrasts for first level analyses. I have been able to run mkanalysis-sess, but am receiving an error when I try to run mkcontrast-sess.

I am receiving the following output, when attempting to run mkcontrast-sess:

Command: mkcontrast-sess -analysis task-ARC_events.mni305 -contrast low-baseline-response -a 6

Output:

INFO: Found 15 Non-Null Conditions

INFO: Found 1 Delays

Condition Weights: 0 0 0 0 0 1.00000000000000000000 0 0 0 0 0 0 0 0 0

mkcontrast2 -config task-ARC_events.mni305/low-baseline-response.config -anadir task-ARC_events.mni305 -wcond 0 0 0 0 0 1.00000000000000000000 0 0 0 0 0 0 0 0 0 -sumconds -o task-ARC_events.mni305/low-baseline-response.mat -prestim 0 -wdelay 1 -no-octave

  mkcontrast2 7.1.1

cmtxfile  task-ARC_events.mni305/low-baseline-response.mat

nconds    15,  wcond  0 0 0 0 0 1.00000000000000000000 0 0 0 0 0 0 0 0 0

ndelays   1, wdelay 1

ndelays   1, wpsa   

sumconds  1

sumdelays 0

nircorr   0

TER       1.75

rdelta    

rtau      

  cmtxfile  task-ARC_events.mni305/low-baseline-response.mat

  monly  0

  NCond   15

  WCond   0 0 0 0 0 1.00000000000000000000 0 0 0 0 0 0 0 0 0

  NDelay  1

  WDelay  1

  TER         1.75

  sumconds   1

  sumdelays  0

  nircorr  0

  TPreStim  0

  RmPreStim  0

  rdelta     0 0

  rtau       0 0

  ndelays    1

  CNorm      1

  setwdelay  0

  setwcond   0

Matlab file is /tmp/mkcontrast2.21185.m

------- matlab output --------------------

MATLAB: Undefined variable.

ERROR running mkcontrast

mkcontrast2 -config task-ARC_events.mni305/low-baseline-response.config -anadir task-ARC_events.mni305 -wcond 0 0 0 0 0 1.00000000000000000000 0 0 0 0 0 0 0 0 0 -sumconds -o task-ARC_events.mni305/low-baseline-response.mat -prestim 0 -wdelay 1 -no-octave

I have searched the web but was unable to find a solution. Do you have any ideas, what may be causing the error?

1) freesurfer-linux-centos7_x86_64-7.1.1-20200723-8b40551

2) Platform: I am running the script on our university's cluster. The cluster is Linux based but I am unable to provide details regarding the specific Linux version.

Thank you for your help!

Best regards,

Bianca Sieveritz