ctd's

i just did a new install on my computer. no problems with game in old install. no i get ctd's every 2-7 turns. if i turn the sounds of it seems to work with no problems. the only 2 changes i made are- upgrading media player from xp pro default to newest vers. & upgrading sb live5.1 to audigy2 with newest drivers. i already posted this in the 1.05 bug thread. a member told me about the codex download & how to install it. it did not help. so far tech support wants me to run the game without sound. that is not an option for me. i beleive(hope) more help is forthcoming from that end. what i am really hoping for is somebody here having the same problem & knowing the 'fix'! anybody?
(:(