Well the problem was the update to Fedora 38 specifically the version of gnome ( window manager) they distributed with the release of 38 had a bug in it.? Be sure if you upgrade to Fedora 38 on your host that you apply the latest upgrade to the os ( released this week) otherwise DecoderPro will crash the gnome-- the window manager ( sometimes PanelPro? will as well). Symptom of the crash is that you are starting DecoderPro -- see the splash screen then the screen goes blank and you are back at the login window for Fedora.

Jmri 4.99 to current version exhibited this problem, below 4.99 it runs fine without the upgrade released this week.? I have dug into the gnome source code, but still not sure why it crashed, just that it does.? Since redhat has fixed the problem saw no sense in looking farther into the code.

Bob