Running error: ln: failed to create symbolic link

Dear FLUKA experts,
When I running a flair file in FLUKA 4-1.0 and Flair 3.1-8, an error hinted as follows:
Dir: /home/llixiaoman/FLUKA4.1/fluka4-1.0
Data: /home/llixiaoman/FLUKA4.1/fluka4-1.0/data
Exec: /home/llixiaoman/FLUKA4.1/fluka4-1.0/bin/fluka
Input: /mnt/g/2020-9-18/ICRP/AF/AF_2.inp
Initial seed already exists
Running fluka in /mnt/g/2020-9-18/ICRP/AF/fluka_632

ln: failed to create symbolic link ‘fort.1’: Operation not permitted
ln: failed to create symbolic link ‘fort.2’: Operation not permitted
ln: failed to create symbolic link ‘fort.11’: Operation not permitted
ln: failed to create symbolic link ‘fort.15’: Operation not permitted
======================== Running FLUKA for cycle # 1 ========================
Removing links
Error: Something wrong, fort.1 is a file and not a link!
But this file is correct in previous version.
I want to know what happened. Thanks a lot.
Best Regards,
Xiaoman

Dear Xiaoman,

the error doesn’t related to Flair, but rather to the Linux system you are using (I’m guessing WSL)

To get the actual version could you tell us the output of these commands:

uname -a
lsb_release -a

In the mean time, please try to update FLUKA to 4-1.1 as well.

Cheers,
David