I am running a full updated Ubuntu 24.04 and just bought Bootstrap Studio.
The AppImage crashes like this:
./Bootstrap\ Studio.AppImage
[608552:0623/162834.212965:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_Bootst6HB4pi/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap (core dumped)
The solution was to run it with this option:
./Bootstrap\ Studio.AppImage --no-sandbox