Aircraft not showing up

[Meck]

Hey,
I have all my add on planes sourced out on a external HDD. I recently added an A-380 (from BVA) and the MDD DC-10 (available here). But somehow they won't show up in the aircraft selection in freeflight mode (all the other out-sourced ones do!), but if I copy them to the original SimObjects - Aircraft folder they show up...
Has anyone an idea what could cause this?

[Hagar]

I'll check out the DC-10 if I can find it but my first thought is that these aircraft have aliased panels. If the aircraft they are aliased to are not in the same directory they will not be listed on the selection menu.

[Meck]

Good thought! That may be the solution...

edit: yes that's it! I now found out that my An-225 isn't showing up aswell. And I think all of them use the default 747 2D-panel (I'm not sure of with the DC-10)...