Aye well, I never thought about actually throwing it in-game, so I did, and the problem remains.
It seems to be just the one texture that is giving the problem though.
rw.paa
All the others seem to work just fine.
Will experiment some more.
EDIT:
I went back to a copy of the standard abel.wrp and put your runway textures on it, then tried that in-game, everything works fine, no problems.
Trying the same with the OPRW copy of your abel.wrp brings back the screwy textures on the runway again.
So it seems to be something on your .wrp file or maybe it just doesn't like the larger textures
PM me your msn or skype info, if you have them, so I can send you the OPRW copy of your .wrp for you to try.
Planck