FS 9 Virtual cockpit textures all white on some aircraft

It would help if you told us at least one aircraft this happens to, and where you got it.

If you are adding an older repaint to a plane, check in the texture folder that came with the plane itself and look for any textures that may be missing in your repaint's texture folder. If so, copy them over into your repaint's folder.

Tom's right - the VC textures will be missing, and can be added from one of the textures supplied with the plane originally.

This often happens with payware aircraft, where the vendor will only allow repaints to include the fuselage, engine cowlings, tail and wing sections. The VC, cabin, and miscellaneous details sections are therefore not included with the repaints for those aircraft.