Can not load JK2 single player

i r try start jk2 singleplayer  so i cud make crap vid but this happened....

it says "recursive error after: Couldn't load shaders/$eC!"

yet multiplayer still loads and works
wat do?!

http://www.lucasforums.com/archive/index.php/t-127291.html

This isn't the exact same problem as yours but some of the suggested fixes in there might help?

That error is totally unknown to me and is very weird. So far you were doing well, I literally don't understand

Have you added any skins/mods recently ?

no but i tried playing bespin ruins and gr bespin... thats when it happened.

i want to film my next video on GR Bespin and Bespin Ruins (it's going to be a sequel to christmas special!) on singleplayer cuz there will be a big battle