I purchased this game via Steam. I tried many ways but it is still crashed when launching.
I googled this error but unsolved yet.
I installed patch 1.4, then 1.5 (got 'Cannot identify installed version' error)
Running witcher.exe as Admin doesn't work.

My pc spec:
Windows 7, Intel Core i5 2500, 32bit
NVIDIA GeForce GT 440 1GB

Here is the errlog file after crashed, please take a look:

The Witcher Crash Log
==============================================
Build: [Plus] 1.4.5.1304 (11/04/08 13:51:26)
Exception: EXCEPTION_ACCESS_VIOLATION
Read from location 000091FC


EAX=0000247C EBX=0000000F ECX=00000000 EDX=00824790 ESI=044E45F8
EDI=17F48FA8 EBP=00000000 ESP=01CCFAFC EIP=0082479A FLG=00210202
CS=001B DS=0023 SS=0023 ES=0023
FS=003B GS=0000

Call Stack
--------------------


Mini dump written successfully.
System: Unknown
Crash time: 1/8/2013 11:51:56
User: Hoang
4 processor(s), type 586
62% memory in use
3575 MB physical mem
1338 MB physical mem free
2048 MB virtual mem.
1323 MB virtual mem free.
Total Reserved: 216184K
Total Commit: 527092K
Total Free: 1353812K
Largest Free: 742396K

-----------------------------------------------------------
Aurora Info
0 block(s) not fit in arenas
0 trimesh(es) optimized
0 uncompressed texture(s) loaded via CAurTextureLoader
-----------------------------------------------------------


Module 1 - C:\Program Files\Steam\steamapps\common\The Witcher Enhanced Edition\system\miles\msssrs.flt
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