Pluto SDR persistent SSH keys command failing on fimrware 0.32

Hi all,

I have a Pluto SDR on the latest firmware (0.32) as evidenced by the SSH session.  I want to enable persistent SSH keys on it per the instructions here:
https://wiki.analog.com/university/tools/pluto/users/customizing#enabling_persistent_ssh_keys

The command "device_format_jffs2" runs with the proper output, however, the command "device_persistent_keys" has no output when I run it, and the SSH key for the pluto is not peristent upon reboot.  What is wrong with the device_persistent_keys command?