Please open your debug.err file in notepad, and copy/paste the contents into a post here. This will give us some technical information that can help troubleshoot your problem.
Here you go:
Debug Message:  Version v1.80g Dark Avatar last updated on: Wed Dec 19 15:10:23 2007
Debug Message:  Checking DX Version.
Debug Message:  *********DXDiag info follows.*********
System Info
Time: 4/13/2008, 14:22:46
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Machine Name: YOUR-524031EC7D
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Languages: English (Regional Setting: English)
System Manufacturer: Gateway
System Model: T6420
BIOS: Default System BIOS
Processor: AMD Athlon(tm) 64 Processor 3200+,  MMX,  3DNow, ~2.0GHz
Physical Memory: 384MB RAM
Page File: 322MB used, 596MB available
Windows Dir: C:\WINDOWS
Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: NVIDIA GeForce 6100
Manufacturer: NVIDIA
Chip Type: GeForce 6100
DAC Type: Integrated RAMDAC
Key Device: Enum\PCI\VEN_10DE&DEV_0242&SUBSYS_72071462&REV_A2
Display Memory: 128.0 MB
Current Display Mode: 1024 x 768 (32 bit) (60Hz)
Monitor Name: Plug and Play Monitor
Monitor Max Resolution: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0010.8133
Driver Date: 9/18/2005 10:32:00
DirectX Acceleration Enabled: Yes 
Sound info
Sound device 1:
Description: Realtek HD Audio output
Default Sound Playback
Default Voice Playback
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0880&SUBSYS_1462E603&REV_1008
Manufacturer ID: 1
Product ID: 100
Driver Name: RtkHDAud.sys
Provider: Realtek Semiconductor Corp.
Driver Version: 5.10.0000.5152
Driver Date: 9/14/2005 13:38:00
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:  Preparing to change display settings.
Debug Message:  Using hardware vertex processing
Debug Message:  Using multilsample setting: D3DMULTISAMPLE_NONE
Debug Message:  Attempting to create D3DDevice at resolution 1024 x 768, Windowed: 1, Multisample: 0
Debug Message:  Game Resolution: 1024 x 768
Debug Message:  Running in windowed mode.
Debug Message:  HAL (hw vp): NVIDIA GeForce 6100
Debug Message:  D3DPRESENT_INTERVAL_IMMEDIATE
Debug Message:  Refresh rate: 0
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:  Border size reported as 6 by 32
Debug Message:  RGB in format 6:6:6, Masks reported as ff0000:ff00:ff
Debug Message:  Now windowed.
Debug Message:  Shell initialization complete
Debug Message:  GalCiv2 is activated.
Debug Message:  ***** Initializing Game *****
Debug Message:  Timer Frequency is 0 369e99
Debug Message:  Initializing sound card.
Debug Message:  initailizing bink
Debug Message:  No files found matching mask Movies\techs\*.bik
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\sfx\*.wav
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\Music\*.mp3
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My 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 ./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:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\ships\*ElesClass*.shipcfg
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\ships\*MalacorIntercpetor*.shipcfg
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\ships\*NetroMancerClass*.shipcfg
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\ships\*X-KRB-XCerberus*.shipcfg
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\ships\*X-VLK-81MaidenFrame*.shipcfg
Debug Message:  WARNING: Ship Style 'Earth Federation Sty': Could not find template: 'BumblebeeFighter_t'
Debug Message:  Reading Star Names
Debug Message:  Reading Star Names... Done
Debug Message:  No files found matching mask ./Data/English/Tutorials/*.xml
Debug Message:  Clear data definitions.
Debug Message:  Killing ship styles:
Debug Message:  No files found matching mask C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\Metaverse\ShipStyles\*.xml
Debug Message:  No files found matching mask ./MetaverseData/\FleetFormations\*.fleet
Debug Message:  No files found matching mask Gfx\Planets\C0*.png
Debug Message:  MetaverseWnd: Cannot find OBJID Metaverse_Character_Race_Title
Debug Message:  MetaverseWnd: Cannot find OBJID Metaverse_Character_Name_Value
Debug Message:  MetaverseWnd: Cannot find OBJID Metaverse_Character_Race_Value
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\Stardock\TotalGaming\GalCiv2\DarkAvatar\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\Stardock\TotalGaming\GalCiv2\DarkAvatar\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:  WARNING: Could not find specified ship style 'Earth Federation Sty' for civilization: Terran Alliance.  Trying default style name: 'Terran Alliance Style'
Debug Message:  WARNING: Could not find specified ship style 'Earth Federation Sty' for civilization: Terran Alliance.  Trying default style name: 'Terran Alliance Style'
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: 4  Max Num Stars: 65
Debug Message:  Planet Frequency: 2  Max Num Planets: 156
Debug Message:  Galaxy Size Set: 5 x 5
Debug Message:  Creating Random Map
Debug Message:  Creating Random Map... Stars
Debug Message:  Star Density: Loose clusters.
Debug Message:  Number of Unplaced Stars: 22.
Debug Message:  Creating Random Map... Planets
Debug Message:  Total planets placed: 65
Debug Message:  Creating Random Map... Anomalies
Debug Message:  Num Anomalies: 235
Debug Message:  Creating Random Map... Resources
Debug Message:  Creating Random Map... Done
Debug Message:  Distributing bonuses on planets...
Debug Message:  WARNING: Could not find specified ship style 'Earth Federation Sty' for civilization: Terran Alliance.  Trying default style name: 'Terran Alliance Style'
Debug Message:  Creating Random Map... Asteroid Fields
Debug Message:  Setting Game Options
Debug Message:  Creating Civs
Debug Message:  Earth Federation: Intellence -> 50
Debug Message:  Drengin Empire: Intellence -> 50
Debug Message:  Altarian Resistance: Intellence -> 50
Debug Message:  Arcean Empire: Intellence -> 50
Debug Message:  Torian Confederation: Intellence -> 50
Debug Message:  Yor Collective: Intellence -> 50
Debug Message:  Dominion of Korx: Intellence -> 50
Debug Message:  Drath Legion: Intellence -> 50
Debug Message:  Iconian Refuge: Intellence -> 50
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 = 0
Debug Message:  UIBeginGameHelper: New Metaverse Game Started
Debug Message:  UIBeginGameHelper: Mods are Disabled
Debug Message:  Tried to enter unprintable character: 8
Debug Message:  Tried to enter unprintable character: 8
Debug Message:  Tried to enter unprintable character: 8
Debug Message:  Destroying ship Drengin Empire Colony. Orbiting: 0
Debug Message:  Destroying ship Altarian Resistance Colony. Orbiting: 0
Debug Message:  Destroying ship Torian Confederation Colony. Orbiting: 0
Debug Message:  Destroying ship Yor Collective Colony. Orbiting: 0
Debug Message:  Destroying ship Dominion of Korx Colony. Orbiting: 0
Debug Message:  Destroying ship Drath Legion Colony. Orbiting: 0
Debug Message:  Destroying ship Iconian Refuge Colony. Orbiting: 0
Debug Message:  Updating ZOC.
Debug Message:  Random Event: End
Debug Message:  WARNING: CloneFrames failed
Debug Message:  Destroying ship Arcean Empire Colony. Orbiting: 0
Debug Message:  Updating ZOC.
Debug Message:  Random Event: End
Debug Message:  AStarPathToTile: A* Path too long to calculate (9.219544).  Aborting
Debug Message:  Random Event: End
Debug Message:  A* Path too long to calculate (37.483330).  Aborting
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Yearly Status Dialog
Debug Message:  Yearly Status Dialog 0a
Debug Message:  Random Event: End
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  First contact: Arcean Scout Ship M0 v1 27 at position 1850.000000,2850.000000 rotation 0.785398
Debug Message:  Random Event: End
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  First contact: Iconian Refuge Flagship at position 1750.000000,2650.000000 rotation 1.570796
Debug Message:  Year: 2226. Arcean Empire traded New Propulsion Techniques to the Dominion of Korx in exchange for Ion Drive
Debug Message:  Random Event: End
Debug Message:  Destroying ship TAS Columbus. Orbiting: 0
Debug Message:  Updating ZOC.
Debug Message:  WARNING: CloneFrames failed
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Random Event: End
Debug Message:  Save Game: About to save
Debug Message:  Saving game C:\Documents and Settings\Owner\My Documents\My Games\GC2DarkAvatar\QuickSave.tmp
Debug Message:  Num Sectors Across: 5
Debug Message:  Saving: game mode is metaverse.
Debug Message:  Number of ships: 27, Number of Fleets: 0
Debug Message:  Save game finished.
Debug Message:  OptionsWnd: Quit Btn
Debug Message:  Posting WM_CLOSE message.
Debug Message:  WM_CLOSE message received.
Debug Message:  GameUninitialize start
Debug Message:  Killing 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:  Clear data definitions.
Debug Message:  Killing ship styles:
Debug Message:  Killing Galaxy: Completed
Debug Message:  Shutting down sound system.
Debug Message:  Clearing sound and music handles.
Debug Message:  WorkAreaBack.png not cleared 1 counts left.
Debug Message:  GameUninitialize end
Debug Message:  Device not cleared. 1596 counts left.
Debug Message:  D3D not cleared. 1 counts left.
Debug Message:  Destroying Window.
Debug Message:  Main Shell terminating normally
Note: Above debug for DA version 1.80g