Order of twilight texture problems
It's most likely related to your GPU's capabilities, and isn't really fixable. Regardless, post your graphics card/chip model and we'll go on from there. If you're unsure how, see viewtopic.php?p=48158#p48158
Here it is and interesting thing is that I have same problem with mari0 but month ago it was fine http://www.bildites.lv/images/e58budnalvdzkd6c5u.png