Gettting distrobuilder error trying to create windows 11 vm about "source write-protected, mounted read-only"

[ Resolved by re-downloading the win11.iso again.]

I am trying to create an LXD Windows11 VM but see the following errors?
Any tips/hints what’s causing this would be appreciated.

sudo distrobuilder repack-windows /home/bmullan/win11/win11.iso /home/bmullan/win11/win11-lxd.iso
INFO[2023-03-10T21:34:38-05:00] Mounting Windows ISO
mount: /var/cache/distrobuilder.2915058409/source: WARNING: source write-protected, mounted read-only.
INFO[2023-03-10T21:34:38-05:00] Mounting driver ISO
mount: /var/cache/distrobuilder.2915058409/drivers: WARNING: source write-protected, mounted read-only.
Error: Unable to find install.wim
INFO[2023-03-10T21:34:38-05:00] Removing cache directory