I have the latest drivers installed - 11.7MB 6.2 Feb. 9, 2006
http://ati.amd.com/support/drivers/2k/radeonx-2k.html
And the game crashes with different errors. My system is 6 months old - I re-used my old video card, the drivers have been installed since build time.
Everything else in source runs fine - half-life 2 DM, CS:S, half-life 2 single player - all run with no problems.