Can you give some more specifics as to the problem. Also, what aircraft specifically are you having a problem with? Do the default planes work still or is that gone too?
the P51, A319, A320, A380-100, A380-800, F-18, Su-27, Spitfire MKXIVe and the paper airplane (I know, it's sad) they either have incomplete textures or dont work at all I am using Flight Simulator X the default planes work fine please help
As foolish as it sounds, take a look in the texture folder to make sure that there are .bmp files in there. I have done that a few times where I forgot to copy the contents of the folder. Otherwise, I would just try to fully remove the plane from the folder and try to reinstall it. I'm sorry that I am not more help.