I was working on a normal assult map, but for some reason every time i try to save, the editor crashes. The map still saves, but the editor falls out.. I found this in the editor.log...
I suspect there's a UCL for deathball in the ../ut2004/system path, but there's no deathball.u there to go with it.. (it's in the ../ut2004/deathball/system path)
You can try adding the additional paths to your ut2004.ini file. so it finds the files.