The instructions here don't work. I have Scratch working, but if I try to open Byob I either get an error from Squeak or I don't, in which case I see a window, but it's just white.
BTW the Ubuntu I'm on is 22.04 Jammy Jellyfish.
In olden times, I worked with Tim Rowledge (who did the Scratch 1.4 speed ups for the Raspberry Pi) and came up with this installer.
Just tried in on my Linux Mint VM (Ubuntu derived) and it works with some small changes to the hard-coded /home/pi folders
download the installer
wget https://dl.dropbox.com/s/zgkq2jw9o9wbava/installBYOB.sh -O installBYOB.sh
and then edit the file and change /home/pi/ to /home/yourusername/
in the first few lines
Also change
chown pi:pi /home/pi/Desktop/BYOB.desktop
to
chown yourusername:yourusername /home/yourusername/Desktop/BYOB.desktop
then
sudo bash installBYOB.sh
Thanks! For some reason, if I maximize it, it goes black, though.
So it does 
Just manually adjust it's size as workaround 
It also seems to think the window width is a lot smaller than it really is.
For example, if I have it this wide:
it thinks it's only 163 pixels wide.
Also, how do I open it in development mode? The way the Windows BYOB Development.BAT file does?
run this from terminal
bash /usr/bin/BYOB %f dev
and then shift-click on Edit
Thanks. Another thing, though: I can't save projects--I get "Save failed: Unknown class VariableDeclarationBlockMorph".
Mine works
Try re-installing - you may be lucky 2nd time
Thanks! That worked.