[Angelscry]

After reboot Advanced Launcher no longer shows the "SNES" launcher I had configured. Again, I'm no Linux expert, but this all seems very broken to me. Tomorrow I will start over with minimal Ubuntu install, I believe that will be much less headaches.

Your launchers.xml file have may be corrupted. To fix this, you can load and restore an old recent launchers.xml file. Go into Advanced Launcher settings, then into Backup/debug menu and select "Load a backup launchers.xml file". Here you will have a list of file under this form : YYYMMDD-HHMMSS-MILLISEC-launchers.xml. Select the one before your SNES launcher has disapeared to restore it.