KOTOR Appcrash Problem

[typhoon13]

Okay so I've had this problem for a while now. I'll be playing and everythings fine, but then I walk forward and it crashes.

Problem signature:
Problem Event Name: APPCRASH
Application Name: swkotor.exe
Application Version: 1.0.3.0
Application Timestamp: 402bc2d9
Fault Module Name: StackHash_0a9e
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 0176f5d9
OS Version: 6.1.7600.2.0.0.768.3
Locale ID : 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Any help would be appreciated. Thanks. (I have the Best of PC version.)