Calamares crashes when selecting a partition option


I made a bootable USB using Rufus (DD mode) on Windows.
When I try to use this drive to install a full version onto an ssd the installer, Calamares, crashes when I select 'Erase Disk' and also crashes if I select 'Manual Partition' and try to edit the existing partitions.
This seems similar to the fault identified in, but that was supposedly fixed for v3.2.4 --- I am using v3.2.4.1 !
What am I doing wrong???



Update: used gparted to format the disk to ext4, and now the installer works perfectly.