Ouch! I have a lot of artistic work which is developed in Squeak on Linux 
-- currently only up to 4.3 (which is working fine for me, so I haven't 
upgraded). I'm trying to run one of my 4.3 images on a Raspberry Pi 3B+ 
which is at Raspbian 10 (buster), and with the current armv6 squeak VM, 
getting the message

This interpreter (vers. 6521) cannot read image file (vers. 6504).

Suggestions?

-Thanks in advance, Jim