LC 2.9.4 Configuration - Unsupported Locale

RPi 4B 4GB, Mesa 7i96, 3-axis vertical mill.
Mill runs LC 2.9.2 with Axis or Gmoccapy just fine.

First install of fresh L2.9.4, using PnCConfig and selecting Gmoccapy.
Get the error message of "Unsupported locale" when selecting [Forward] on the X-axis set-up page.

Used the LC 2.9.4 menu-config to set locale.
I am in Sydney, so tried "en_AU.UTF-8 UTF-8", a couple of other obvious ones, and "All".
Still getting the error.

Tried selecting [Back], but still get error.

Cancelled out and started again, but selected Axis.
Still getting error.

But realized that errors are generated at the step calculation stage also.
Thought this was cleared when I hand entered the correct value.

John.

forum.linuxcnc.org/9-installing-linuxcnc...only?start=10#320959

Just about ecevrything to do with the Rpi images can be found in this thread, there is also an index to that thread here
forum.linuxcnc.org/38-general-linuxcnc-q...official-images-only