The available bundle cache message is normal -- ChimeraX asynchronously downloads the available bundle metadata from the toolshed, and sometimes that takes a while.  With that metadata, if you type in a command that is not installed or try to open a data file that needs a particular bundle, ChimeraX can tell which bundle you need to install to use it.

It's hard to guess what's wrong without seeing your script.  "chimerax --script path/to/script" is equivalent to starting up ChimeraX graphically and the typing "open path/to/script" on the command line.  That might help you debug what's going on.

As for Ubuntu 24.04, the 1.8 build is now on the web site.  The daily builds are 1.9 development releases.

    -- Greg

I tried to install ChimeraX daily build on a fresh install of Ubuntu 24. When I launch the program, the log says "Available bundle cache has not been initialized yet." Another oddity I"ve noted is that tying to run a python script w/ 
"chimerax --nogui --silent --offscreen --script path/to/script" works but
"chimerax --script path/to/script" doesn't. I just get a black screen. 

There also isn't a stable build for Ubuntu 24, only daily builds. Should I downgrade my OS?

Alex