UT3 Crashes on Start - missing BaseUI.ini ?

[MithrilMike]

I am getting a crash as soon as I try to start UT3 (purchased through Steam). This is a fresh install of the game, never successfully run.

Windows Vista 64bit says:

Problem signature
Problem Event Name: APPCRASH
Application Name: UT3.exe
Application Version: 0.0.0.0
Application Timestamp: 49ad3bea
Fault Module Name: kernel32.dll
Fault Module Version: 6.0.6001.18000
Fault Module Timestamp: 4791a81d
Exception Code: e06d7363
Exception Offset: 0002f35f
OS Version: 6.0.6001.2.1.0.256.6
Locale ID: 1033
Additional Information 1: 8c51
Additional Information 2: 1ddacc5068d6de32af3a3a4ad5dfab90
Additional Information 3: 737e
Additional Information 4: 8d5b62f0186109e4db05e4377879ca1b

Followed by:

Problem signature:
Problem Event Name: APPCRASH
Application Name: UT3.exe
Application Version: 0.0.0.0
Application Timestamp: 49ad3bea
Fault Module Name: UT3.exe
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 49ad3bea
Exception Code: c0000005
Exception Offset: 00f10687
OS Version: 6.0.6001.2.1.0.256.6
Locale ID: 1033
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160

This seems to be the important one...
Launch.log shows:

Log: Log file open, 03/08/09 21:45:57
Init: Version: 3797
Init: Epic Internal: 0
Init: Compiled: Mar 3 2009 09:00:27
Init: Command line:
Init: Base directory: c:\program files (x86)\steam\steamapps\common\unreal tournament 3\Binaries\
Init: Character set: Unicode
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTEditor.ini
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTEditorUserSettings.ini
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTCompat.ini
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTEngine.ini
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTGame.ini
Log: GConfig::LoadFile has loaded file: ..\UTGame\Config\UTInput.ini
Critical: appError called:
Critical: Couldn't locate '..\Engine\Config\BaseUI.ini' which is required to run 'UT'
Critical: Windows GetLastError: The system cannot find the file specified. (2)
Log: === Critical error: ===
Couldn't locate '..\Engine\Config\BaseUI.ini' which is required to run 'UT'

All drivers are up-to-date. I've disabled sound and videos to no avail.

Any help is appreciated.

Update:
======
My config:
Vista 64 + SP1
Q6600 processor
8GB Ram
Radeon 4870 Video card
X-Fi music sound card

I already tried making these changes to the UTEngine.ini
[Engine.ISVHacks]
bInitializeShadersOnDemand=True
DisableATITextureFilterOptimizationChecks=False
PumpWindowMessagesWhenRenderThreadStalled=True

[SystemSettings]
OnlyStreamInTextures=True

[MithrilMike]

Anyone?

Is anyone else having this problem?

[WaterSnake]

Yup, got this problem too. I'm running Win XP 32 bit, but still, exactly what I get.

I didn't even get the chance to play the game, what a let down.

I also got a BSOD from it.

[MithrilMike]

Ok, this is crazy. I restarted the Steam client, and it started patching about a megabyte of data. Apparently it never downloaded all the files before it let me try to run it. Anyway, I'm happily fragging away now!