Are you playing oldskool?
if not post the unreal version you are using.
(2.24 or 2.25 or 2.26)
I have the same problem, everything looks fine except for the black area in the skybox that should be masked off. I'm using 2.26 and the latest OGL drivers from this wonderful site

.
I'm really appreciative of what u guys do, I mainly play UT now, but i like to come back to Unreal every so often now. Before i got these OGL drivers Unreal crashed alot, so now im happy cuz i can play the game all the way through once more

. (It's my once yearly tradition

).
I just tried the S3TC textures of the 2nd CD for Unreal, and although i appreciate everybodys efforts twards that, im going to disable it and put the old textures back, alot of the textures and the sizing just isn't right - Being a mapper myself i notice these things alot more than the average joe and it spoils the fun

. But keep at what ur doing for the community its all very postive
Here's a pic of my Unreal.
[URL]http://www.ut2003central.com/TEMP/Shot0000.jpg[/URL]
Note it just happens on skyboxes, tree leaves etc are fine.
EDIT -- I take back my statement about the S3TC's, i didn't restart Unreal after enabling them in advanced options, and when i just loaded unreal up i imediately noticed the difference, looks great

there's still some sizing thats slightly wrong in the game, but its a nice improvement indeed
