Having same sort of problems, running Vista 32bit pentium dual cpu, 1,8 GHz, 4 GB memory, ATI Radeon X600 pro 256mb graphic card
'Exception Access Violation' ... it crashes at startup or about 15 seconds after login most of the time. Not only 'normal' crashes, also blackscreens in which i need to restart computer. Sometimes if i'm lucky i can stay a 20 minutes, seems to depend on the area.
Tried with different settings for resolution / graphic detail / sound, on both servers and with different characters... all brought the same problem.
Tried reinstallation too. The updater keeps saying pslaunch.exe is failing integrity check.
Ya might think my graphic card causes the problem, but the few times i was able to stay everything looked okay, fullscreen 1600 x 1200 medium quallity