Dear, 

I'm attempting to execute the recon-all command on the recently released FS 8.1.0 version, however I get an error that I was not getting in prior versions (6.0 and 7.4.1). 

Command: 

Output Log:

Adding options -fix-ento-wm -transfer-base-bfs -fix-vsinus -fix-mca-dura -fix-ga -fix-acj -synthstrip -synthseg -synthmorph
fs-check-version --s FREESURFER --o /tmp/tmp.HYwr24
Thu Jul 24 09:29:43 AM UTC 2025

setenv SUBJECTS_DIR /OUTPUT
/usr/local/freesurfer/8.1.0/bin/fs-check-version --s FREESURFER --o /tmp/tmp.HYwr24
-rwxr-xr-x 1 root root 18565 Jul 19 00:36 /usr/local/freesurfer/8.1.0/bin/fs-check-version

freesurfer-linux-ubuntu22_x86_64-8.1.0-20250719-f30dfed
$Id$
Linux 83857eca32d0 6.8.0-1021-gcp #23~22.04.1-Ubuntu SMP Thu Jan 16 02:17:57 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
pid 126
Current FS Version freesurfer-linux-ubuntu22_x86_64-8.1.0-20250719-f30dfed
Subject does not have a bstampfile, copying /usr/local/freesurfer/8.1.0/build-stamp.txt
Subject FS Version: freesurfer-linux-ubuntu22_x86_64-8.1.0-20250719-f30dfed
No constraints on version because REQ=UnSet and FsVerFile=NotThere
#@#% fs-check-version match = 1
fs-check-version Done
INFO: SUBJECTS_DIR is /OUTPUT
Actual FREESURFER_HOME /usr/local/freesurfer/8.1.0
Linux 83857eca32d0 6.8.0-1021-gcp #23~22.04.1-Ubuntu SMP Thu Jan 16 02:17:57 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
/OUTPUT/FREESURFER

 mri_convert /INPUT/DATA/input_t1/003MSVISMPRAGE_02.nii.gz /OUTPUT/FREESURFER/mri/orig/001.mgz

mri_convert /INPUT/DATA/input_t1/003MSVISMPRAGE_02.nii.gz /OUTPUT/FREESURFER/mri/orig/001.mgz
INFO: using NIfTI-1 sform (sform_code=1)
reading from /INPUT/DATA/input_t1/003MSVISMPRAGE_02.nii.gz...
TR=1970.00, TE=0.00, TI=0.00, flip angle=0.00
i_ras = (0.0348693, -0.999392, 0)
j_ras = (-0.0330512, -0.00115315, 0.999453)
k_ras = (0.998845, 0.0348502, 0.0330713)
writing to /OUTPUT/FREESURFER/mri/orig/001.mgz...
#--------------------------------------------
#@# MotionCor Thu Jul 24 09:29:52 AM UTC 2025
Found 1 runs
/OUTPUT/FREESURFER/mri/orig/001.mgz
Checking for (invalid) multi-frame inputs...
/usr/local/freesurfer/8.1.0/bin/UpdateNeeded: line 14: syntax error near unexpected token `('
/usr/local/freesurfer/8.1.0/bin/UpdateNeeded: line 14: `set Sources = ($argv);'
if: Expression Syntax.