Dear Freesurfer Developers,

I installed Freesurfer 6.0.0 fresh on a Macbook Pro (2021) with M1 chip running macOS Monterey 12.5.

I tried to run recon-all on both on the bert data shipped with freesurfer and my own brain data in .nii.gz format (standard T1 sequence). Both process start fine but abort at the exact same step with an error in Talairach registration.

The command I use is:

$> recon-all -i sub-20190911.nii.gz -s jjm -all

ERROR: awk -f /Applications/freesurfer/bin/extract_talairach_avi_QA.awk /Users/jjm/sci/freesurfer_data/bert/mri/transforms/talairach_avi.log failed!

The contents of the talairach_avi.log are as follows:

awk: towc: multibyte conversion failure on: ' '

For better diagnostics, I'm attaching the recon-all.log and talairach_avi.log and avi_QA.log. Interestingly, in previous attempts to run recon-all, I had received the same error with multibyte conversion failure on 'Ù' and later on 'ö'. I suspected that at some level this is related to language and region settings on my machine. Therefore, I changed region from Germany to United Kingdom and keyboard from German QWERTZ to US keyboard layout (language has always been English on my machine). As a result the reported error regarding multibyte conversion changed from 'Ù' / 'ö' to now ' ', but the error stubbornly persists. Are there any known issues with running Freesurfer on particular region/language/keyboard settings?

Thank you in advance for help in debugging this.