Half Life 2: Episode 2 crashing at same point in game, after updating

In Half Life 2: Episode 2 I get a crashing error everytime as I go under some stairs into the room where there are two hunters and a scientist shooting at the hunters and a rebel on the ground getting beat to death by the hunters. Every time I move for or start shooting at the enemy my game crashes back to desktop.

The only thing I can think of is I updated my graphics card and played the game afterwards which then is where it started. I updated my 8800GT 320 mb to the new 169.12 beta drivers. Was working fine with the 169.09. But I wanted to update. I also have 4gig ram, 3gig readable as I am running on Windows Vista 32bit, and Core 2 Duo 6700.

Vista gives me this error information:

Problem signature:

Problem Event Name: APPCRASH

Application Name: hl2.exe

Application Version: 0.0.0.0

Application Timestamp: 470c11ae

Fault Module Name: client.dll

Fault Module Version: 0.0.0.0

Fault Module Timestamp: 470bb8b3

Exception Code: c0000005

Exception Offset: 00208f3f

OS Version: 6.0.6001.2.1.0.768.3

Locale ID: 1033

Additional Information 1: fd00

Additional Information 2: ea6f5fe8924aaa756324d57f87834160

Additional Information 3: fd00

Additional Information 4: ea6f5fe8924aaa756324d57f87834160

Edited November 23, 200718 yr by jca2007