fresh install of ut3, rebooted as instructed. applied 1.3 patch, installed community bonus pack 3 volume 1 and 2, restored saved configs/ue3profile from last time i had ut3 installed.
launched ut3, enabled hardware physics setting, went to start a map in instant action (any map, doesnt seem to matter if its a default map or custom), after pressing Start Game, map starts loading and then ut3 crashes to desktop with no error, just disappears.

disabled hardware physics and it still CTDs after loading the map
also CTDs if i try to edit my existing player character

xp home sp3
geforce 9800gt
nvidia 180.48 drivers (physx gpu acceleration enabled)
directx 9.0c
ut3 patched to 1.3