[Nadia]

I further tracked it down to CBED1E32E34B7564 and E2702038D11DF4BA.
Temporarily removing these two default skin activation files, makes me loose the
default skin TU2S(cc) and the default skin GladiatorMkI(no).
But my cockpits are back and my much needed Forgotten Countries is running again.
I haven't checked for more lost of cockpits for lack of time. Took me four days already.
Hope this can be fix in upcomming new versions...
Totally appreciate your creative efforts and hope this wil help. Thanks everyone.

The problem comes from the mod version you installed: the "no-UI" version doesn't include the new flyable planes, such as the Gladiator and the Tu-2s. I recommend downloading and installing the "UI-compatible" version of the mod, even if you don't have the AAA Unified Installer. I'll clarify this point in the first post.

OK I understand. I will try that : i.e. downloading the AAA Unified compatible
version of Forgotten Countries...