Has NE1 else had problems with Postal2 STP and ATI cards?

I am new to ATI and I have a 9800Pro runnig the latest Omega's. I keep having problems running the latest Postal2. I keep getting booted back to the desktop with a GPF error. I have tried all kinds of different settings in the driver and the game but nothing helps. The boot can be anywhere from 2 minutes to 20 minutes. I thought I had it cured when I swithched to OpenGL but it happened again last night. I have no problems running anything else. Card is not o/c'd, running DX9.b. I am in the last levels of Friday and will put up with it if I have to, but it is irritating. I have been able to find no answer on the game company site, so I come to the experts

Well, I got around the problem. I tried what RWS's website said and disabled my antivirus and reinstalled the game. All drivers are up-to-date. Used the ingame Performance Wizard to get the settings right. Started the game and played just over 20 minutes. You guessed it, crashed again. Then I cured it. I installed the game on my Video machine that has a TI4600. Played for over 1 1/2 hours without a hiccup. I guess I will finish Postal2 there. I hope this is not a sign of things to expect from my forray into ATI.

9600XT AND 9800PRO no probs with postal.

What version drivers for your ATI?

OK, this is what I tried. I uninstalled the Omega 3.10's and went back to the ATI 3.9's. Played for awhile and you guessed it, crash after about 15 minutes. I remember reading on the RWS website to try turning OFF AA and AF if it is turned on. Since I had both set to Application Preference and didn't see a way to turn them off, I set the AA to 4x and the AF to 8x. I then went back to the game and finished it without a crash, about 20+ minutes. Why did that seem to FIX my problem? I have fought the crashes for the entire game and never thought forcing the options HIGHER would cure the crashes. Go figure.

This is driving me INSANE

I thought I had it fixed but I did not. Today I have tried every ATI and Omega driver from 3.7 up. I even tried the XP version once. I have used Driver Cleaned in Safe-mode between each driver install. I have tried EVERY driver setting from one end to the other. I have uninstalled the game twice, reinstalled with Firewall and A/V disabled. I have changed the APG Aperature settings. turned Fast writes on and off. Tried running in OpenGL. Updated M/B drivers, Raid driver, Intell AA ide driver. All to no avail, I cannot get this to run on my ATI card. It runs just fine on my other machine which is basically idenetical except it has a TI4600 and it runs great there. The only thing I can think of is that the ATI box has the latest Soundblaster drivers while the Nvidia machine is just using what XP installed. But I don't see why that would make a difference. WTF am I missing.

Radeon 9700 Pro and no problems here. Cats 3.9 btw.

Radeon 9700 Pro and no problems here. Cats 3.9 btw

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9600XT AND 9800PRO no probs with postal.

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I know it is just something in MY config, some combination that is causing the crashes. I guess I am either going to have to delete it from my ATI box or do the "ultimate" and drop an F-Bomb on the box and start all over adding things until I find the problem. I don't think it is the card itself as MOD and MP2 both run flawlessly. Even if heat was the problem it should show up in those 2 also. I was hoping somebody else had had the problem and could give my an idea of what else I could look for.

UPDATE, problem has been solved (I hope) by a format and reinstall of XP. Played for over an hour trying to find my way out of Tora Bora without a problem with settings set to Max Quality with lates Omega's. I thought I was good wenough to go from Nvidia to ATI without doing it but maybe not. I was sure I had left nothing Nvidia behind, but apparently not. I learned my lesson.