I'm getting a weird problem in P3Dv4.1, that has just suddenly started happening. All the IRIS aircraft that I have installed in P3Dv4.1 (warthog, F15 and the P3D Raptor) have suddenly started showing black textures on the outside of the aircraft as shown in the attached screenshot. If I load the aircraft, the outside also is black. This only affects IRIS aircraft, including the default F22 Raptor. All the other aircraft in the hangar (and there are quite a few) show just fine. This has only just started happening as well. I last used P3Dv4.1 4-5 weeks ago, and at that time, the IRIS aircraft showed okay. The only changes since then have been some sceneries installed, JustFlight VC10, and a few other additions. Also installed a number of AI aircraft. Anybody seen this before, and does anybody have ideas, suggestions etc? Could this be related to the number of aircraft I have installed?