Oh - what a dumb fault.
As a workaround you can add the original Hovercrafts (2.0.4) too – as I did by incident. That should fix this load error. In the meantime I will release a new version that will rollback to the original dependency, because my new mod won't remain for long, because the original mod seems to be apparently still maintained after all.
P.S.: As long as the changes I made in my new mod aren't integrated into Hovercrafts, you should stay with U.F.O. at 1.0.8. Otherwise an old bug with the wrong named fuel_category will pop up.
