Comment 5 for bug 841867

Ah, yeah, we've seen that problem before (on IRC, I think).
Kupfer expects the Debian (or at least Ubuntu's) packaging of xfce, which has it as xfce4-terminal, so it doesn't have "terminal" in its database.
What Kupfer should really have is a fallback on Debian's alternatives or mime or whatever more standard ways of discovering terminal emulators there are.

At a minimum, at least, Kupfer won't crash with this patch :)