OK, so not really an XFCE question, but this seemed the best place to ask.
I use Cinnamon, but have trusty Thunar installed for when Nemo bugs out. I noticed that a custom action to open a terminal doesn’t work though.
Failed to launch preferred application for category "TerminalEmulator" Could not find fallback TerminalEmulator application.
I’ve had a look at a Xubuntu install, but couldn’t figure out where these defaults are stored. Is there any way to set them without