Hi I'm new to this forum, so please excuse if this is a daft question! I have noticed the self same problem with WOA installed AI aircraft when I'm running under DX10. Also all my older aircraft have no skins either! Is there a work around? Just now I have about 30 usable planes that are visible in DX10 but thousands of "older" aircraft in the hangar. When I disable DX10 the "new" aircraft are mainly transparent, but the old ones are OK!
I've just migrated to a new system (details below) on my old XP system "new" and "old" aircraft were visible and obviously DX10 wasn't an option.
Acer Predator G7760, Intel Core i7-2600 @3.4 GHz
12.0 GB RAM, Windows7
NVIDIA GTX570
FSX Acceleration Sp1 & 2