here is the debug info:

Debug Message: Version v1.80a Dark Avatar last updated on: Fri Oct 19 12:12:47 2007
Debug Message: Checking DX Version.
Debug Message: *********DXDiag info follows.*********
System Info
Time: 10/20/2007, 16:09:50
DirectX Version: DirectX 10
Machine Name: ZEC-PC
Operating System: Windows Vista™ Ultimate (6.0, Build 6000) (6000.vista_gdr.070627-1500)
Languages: English (Regional Setting: English)
System Manufacturer: Micro-Star International
System Model: GX700
BIOS: Ver 1.000
Processor: Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz (2 CPUs), ~2.2GHz
Physical Memory: 2046MB RAM
Page File: 1454MB used, 2860MB available
Windows Dir: C:\Windows


Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: NVIDIA GeForce 8600M GT
Manufacturer: NVIDIA
Chip Type: GeForce 8600M GT
DAC Type: Integrated RAMDAC
Key Device: Enum\PCI\VEN_10DE&DEV_0407&SUBSYS_43271462&REV_A1
Display Memory: 512 MB
Current Display Mode: 1680 x 1050 (32 bit) (59Hz)
Monitor Name: Generic PnP Monitor
Monitor Max Resolution:
Driver Name: nvd3dum,nvd3dumx.dll,nvwgf2um, nvwgf2umx.dll
Driver Version: 7.15.0011.5609
Driver Date: 6/20/2007 12:21:00
DirectX Acceleration Enabled: Yes



Sound info
Sound device 1:
Description: Speakers (High Definition Audio Device)
Default Sound Playback
Default Voice Playback
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_14624327&REV_1000
Manufacturer ID: 1
Product ID: 100
Driver Name: HdAudio.sys
Provider: Microsoft
Driver Version: 6.00.5840.16387
Driver Date: 11/2/2006 01:28:10
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0

Sound device 1:
Description: Digital Output Device (SPDIF) (High Definition Audio Device)
Default Sound Playback
Default Voice Playback
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_14624327&REV_1000
Manufacturer ID: 1
Product ID: 100
Driver Name: HdAudio.sys
Provider: Microsoft
Driver Version: 6.00.5840.16387
Driver Date: 11/2/2006 01:28:10
Type: WDM
Other Drivers:
Acceleration Level: 1
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 hardware vertex processing
Debug Message: Using multilsample setting: D3DMULTISAMPLE_6_SAMPLES
Debug Message: Game Resolution: 1680 x 1050
Debug Message: Running fullscreen.
Debug Message: HAL (hw vp): NVIDIA GeForce 8600M GT
Debug Message: D3DPRESENT_INTERVAL_DEFAULT
Debug Message: Refresh rate: 59
Debug Message: Bit Depth: 32 bit.
Debug Message: *********Checking D3DDevice Caps***********************
Debug Message: A full-color cursor is supported in hardware at high resolution modes.
Debug Message: RGB in format 6:6:6, Masks reported as ff0000:ff00:ff
Debug Message: Now Fullscreen
Debug Message: Shell initialization complete
Debug Message: GalCiv2 is activated.
Debug Message: ***** Initializing Game *****
Debug Message: Timer Frequency is 0 da7a64
Debug Message: Initializing sound card.
Debug Message: initailizing bink
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\Movies\*.bik
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\Movies\techs\*.bik
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\Gfx\Tutorials\*.bik
Debug Message: No files found matching mask Movies\techs\*.bik
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\Gfx\Movies\*.bik
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\sfx\*.wav
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\Music\*.mp3
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\Event Music\*.mp3
Debug Message: Create setup screens.
Debug Message: Clear galaxy settings.
Debug Message: Clear influence.
Debug Message: Clear up laws.
Debug Message: Clear first time events.
Debug Message: Clear wonders and trade goods.
Debug Message: Clear sector mapper.
Debug Message: Set mouse.
Debug Message: Set update timer.
Debug Message: Clear data definitions.
Debug Message: Killing ship styles:
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\ships\*.xml
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\shiptemplates\*.xml
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\ShipStyles\*.xml
Debug Message: No files found matching mask ./Data/\FleetFormations\*.fleet
Debug Message: No files found matching mask Gfx\Planets\C0*.png
Debug Message: No files found matching mask gfx/Terrain/1SideN*.png
Debug Message: No files found matching mask gfx/Terrain/1SideE*.png
Debug Message: No files found matching mask gfx/Terrain/1SideS*.png
Debug Message: No files found matching mask gfx/Terrain/1SideW*.png
Debug Message: No files found matching mask gfx/Terrain/2SideN*.png
Debug Message: No files found matching mask gfx/Terrain/2SideE*.png
Debug Message: No files found matching mask gfx/Terrain/2SideS*.png
Debug Message: No files found matching mask gfx/Terrain/2SideW*.png
Debug Message: No files found matching mask gfx/Terrain/3SideN*.png
Debug Message: No files found matching mask gfx/Terrain/3SideE*.png
Debug Message: No files found matching mask gfx/Terrain/3SideS*.png
Debug Message: No files found matching mask gfx/Terrain/3SideW*.png
Debug Message: No files found matching mask gfx/Terrain/4SideN*.png
Debug Message: No files found matching mask gfx/Terrain/4SideE*.png
Debug Message: No files found matching mask gfx/Terrain/4SideS*.png
Debug Message: No files found matching mask gfx/Terrain/4SideW*.png
Debug Message: No files found matching mask C:\Users\Administrator\Documents\My Games\GC2DarkAvatar\ships\*.shipcfg
Debug Message: Reading Star Names
Debug Message: Reading Star Names... Done
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2./Data/English/Tutorials/*.xml
Debug Message: No files found matching mask ./Data/English/Tutorials/*.xml
Debug Message: GalaxyWnd: Cannot find OBJID Scenaro_MoreDetails_FText
Debug Message: GalaxyWnd: Cannot find OBJID Scenaro_Details_FormattedText
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\Mods\Default\Data\CustomMaps\*.gc2map
Debug Message: No files found matching mask ./Data/English/Scenarios/*.GC2Scenario
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\Mods\Default\Data\Scenarios\*.gc2scenario
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Title
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Disctiption_Spinner_Back
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Disctiption_Title
Debug Error: CustomShipStyleWnd: Unknown edit field ShipList_List_Entry type: CustomListEntry
Debug Error: CustomShipStyleWnd: Unknown edit field ShipList_Avalible_List_Entry type: CustomListEntry
Debug Message: WARNING: GetShipStylePrefix called for civ and civ has no ship style
Debug Message: LoadHardpointsFromPrefsFile failed to load ship config file: ./Data/ShipCfg/\(null)_ColonyShip.shipcfg
Debug Message: Creating Galaxy
Debug Message: Killing threads.
Debug Message: Kiling civs.
Debug Message: Killing ships.
Debug Message: Killing rallypoints.
Debug Message: Killing misc objects.
Debug Message: Killing stars.
Debug Message: Killing anomalies.
Debug Message: Killing asteroid fields.
Debug Message: Killing asteroid field mining bases.
Debug Message: Killing space resources.
Debug Message: Killing colonies and planets.
Debug Message: killing scenario.
Debug Message: Clearing Turn Event Log
Debug Message: Clear galaxy settings.
Debug Message: Clear influence.
Debug Message: Clear up laws.
Debug Message: Clear first time events.
Debug Message: Clear wonders and trade goods.
Debug Message: Clear sector mapper.
Debug Message: Star Frequency: 0 Max Num Stars: 57
Debug Message: Planet Frequency: 4 Max Num Planets: 228
Debug Message: Galaxy Size Set: 18 x 18
Debug Message: Creating Random Map
Debug Message: Creating Random Map... Stars
Debug Message: Star Density: Tight Clusters.
Debug Message: Number of Unplaced Stars: 0.
Debug Message: Creating Random Map... Planets
Debug Message: *************** Failed To Place Planet ***************
Debug Message: *************** Failed To Place Planet ***************
Debug Message: Total planets placed: 65
Debug Message: Creating Random Map... Anomalies
Debug Message: Num Anomalies: 300
Debug Message: Creating Random Map... Resources
Debug Message: Creating Random Map... Done
Debug Message: Distributing bonuses on planets...
Debug Message: Creating Random Map... Asteroid Fields
Debug Message: Setting Game Options
Debug Message: Creating Civs
Debug Message: Terran Alliance: Intellence -> 40
Debug Message: Altarian Resistance: Intellence -> 40
Debug Message: Thalan Empire: Intellence -> 40
Debug Message: Kunhret: Intellence -> 40
Debug Message: Creating Civs... Done
Debug Message: Updating ZOC.
Debug Message: Creating ships...
Debug Message: Updating ZOC.
Debug Message: Galaxy Create... Done
Debug Message: UIBeginGame called with g_ulLocalPlayerID = 3
Debug Message: UIBeginGameHelper: New Game Started
Debug Message: UIBeginGameHelper: Mods are Disabled
Debug Message: Error flipping back buffer to primary buffer.
Debug Message: D3DERR_DEVICELOST
Debug Message: Device lost
Debug Message: Attempting to reset device.

Is this a problem with vista 64-bit edition?