Ok, the immediate close was because the other version didn't shut down correctly. I killed it in task manager, here's the debug.err log:
Debug Message: Version v1.50x3 Dark Avatar last updated on: Mon Mar 12 18:37:34 2007
Debug Message: Checking DX Version.
Debug Message: *********DXDiag info follows.*********
System Info
Time: 5/27/2007, 22:30:32
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp.051011-1528)
Languages: English (Regional Setting: English)
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A02
Processor: Intel(R) Pentium(R) M processor 2.00GHz
Physical Memory: 2048MB RAM
Page File: 1248MB used, 2692MB available
Windows Dir: C:\WINDOWS
Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: RADEON X600 Series
Manufacturer: ATI Technologies Inc.
Chip Type: ATI MOBILITY RADEON X600 (0x3150)
DAC Type: Internal DAC(400MHz)
Key Device: Enum\PCI\VEN_1002&DEV_3150&SUBSYS_20021028&REV_00
Display Memory: 128.0 MB
Current Display Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: SyncMaster 204T/204Ts/204B,SyncMaster Magic CX201Ts(Analog)
Monitor Max Resolution: 1600,1200
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6606
Driver Date: 3/21/2006 23:56:42
DirectX Acceleration Enabled: Yes
Sound info
Sound device 1:
Description: SigmaTel C-Major Audio
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_8086&DEV_266E&SUBSYS_01861028&REV_03
Manufacturer ID: 1
Product ID: 100
Driver Name: STAC97.sys
Provider: SigmaTel
Driver Version: 5.10.4243.0000
Driver Date: 9/15/2004 13:53:12
Type: WDM
Other Drivers:
Acceleration Level: 3
Cap Flags: 0
Min/Max Sample Rate: 0, 0
Debug Message: *********END dxdiag info.*********
Debug Message: Entering WinMain
Debug Message: ******* Starting Game Shell *******
Debug Message: Going Fullscreen
Debug Message: Preparing to change display settings.
Debug Message: Using multilsample setting: D3DMULTISAMPLE_4_SAMPLES
Debug Message: Could not create the render device using default format. Switching to 16bit
Debug Message: Using multilsample setting: D3DMULTISAMPLE_NONE
Debug Message: Could not create the render device.
Debug Message: InitializeDirect3D Failed.
Debug Message: Now Fullscreen
Debug Message: Shell initialization complete
Debug Message: GalCiv2 is activated.
(At this point, it sits there with a dark square in the top left corner, until I kill it in the task manager.)
When I change my windows resolution to something other than 1680x1050, it loads just fine.