I actually haven't had this happen to me until... Just now. 
I had actually Alt-Tabbed out of Demigod to do some forum-surfing whilst I wait for a match to start up, and when I came back, I was greeted with a frozen loading screen, and an Unhandled Exception:
(EDIT: It would seem that I can consistently replicate this error, simply by being Alt-Tabbed out of Demigod, at the time when the next map starts to load)
EXCEPTION_ACCESS_VIOLATION (0xc0000005) at address 0x0081fe1f
attempted to read memory at 0x00000000
Program : D:\Games\Stardock\Demigod\bin\Demigod.exe
Cmd line arguments :
Callstack:
Unknown symbol (address 0x0081fe1f)
Last 100 lines of log...
A full record of the log is stored in the Demigodlog.txt file
info: },
info: hsedna14={ goal1=187273.703125, progress=187273.703125 },
info: hsedna15={ goal1=35, progress=35 },
info: hsedna16={ goal1=44, progress=44 },
info: hsedna17=true,
info: hsedna18={ goal1=147682.609375, progress=147682.609375 },
info: hsedna19=true,
info: hsedna21={ goal1=71470.140625, progress=71470.140625 },
info: hsedna22={ goal1=476877.9375, progress=476877.9375 }
info: },
info: ArmyColor=1,
info: Civilian=false,
info: Difficulty=2,
info: Faction=1,
info: Hero="hsedna",
info: Human=true,
info: InGameName="Luminance",
info: OwnerID="16512",
info: PlayerColor=1,
info: PlayerName="Luminance",
info: Ready=false
info: },
info: {
info: ArmyColor=1,
info: Civilian=false,
info: Difficulty=2,
info: Faction=1,
info: Hero="hrook",
info: Human=true,
info: InGameName="Leveller",
info: OwnerID="11654",
info: PlayerColor=2,
info: PlayerName="Leveller",
info: Ready=false
info: },
info: [6]={
info: ArmyColor=1,
info: Civilian=false,
info: Faction=1,
info: Hero="hqueen",
info: Human=false,
info: InGameName="Snoogles",
info: OwnerID="16512",
info: PlayerColor=6,
info: PlayerName="Snoogles",
info: Ready=false
info: },
info: [7]={
info: ArmyColor=1,
info: Civilian=false,
info: Faction=1,
info: Hero="hvampire",
info: Human=false,
info: InGameName="Stefan-Matte",
info: OwnerID="16512",
info: PlayerColor=7,
info: PlayerName="Stefan-Matte",
info: Ready=false
info: },
info: [8]={
info: ArmyColor=1,
info: Civilian=false,
info: Faction=1,
info: Hero="hepa01",
info: Human=false,
info: InGameName="rs2005",
info: OwnerID="16512",
info: PlayerColor=8,
info: PlayerName="rs2005",
info: Ready=false
info: }
info: }
info: }
info: CVP_GameData:
szGameName: Pantheon (Beta 3) Match
szHostPlayerName: Luminance
szHostIPAddress: 218.185.27.173
szPassword: f0dbb4cf-83fa-48bc-8
szMapName: Crucible
szGameSpecificXML (size): 3530
szGameGUID: 310a2cad-fadd-4c1f-b7a8-e8fd65d80471
szGameToken: FGwgwUFlgN8BaKkBT23w9AmMa/D8bH9I95HuufI5AcB9Ph1Rxj8dCISPM/SAcijgDArCgUTseF1Tj2yIEbe1y4FR0VUGO/tVT1uYuRcEnE7ohjA7QLElST+ZQyESqRw/SHAZ4sBXwqIWqzBvVX+cYtmeC5dhkt+EeQO7COxbztoRvMUdHSECHf/TlxHw60EanxsMztlbOmzuBVxC5HZABy8KK0GzCVpmK5VeWB5aFxnY/V3dE8qa7WVJHFJs6B0QA6O4x0n5QDMZkxqKMR4kmMCz1+uf6BPFJ0eNR7giKXYMDEAUD4RERlxylZLNXns9V6h15wiUiXod+Fdf8Dh2blPm0ncgwldqGQ7AVKlejlcasKb4IasUM0maybJkXKsIjEtt26Ej5GfLlJnHcPSnQkg4L7Pk6O+M4ahBg4yPZzhifgXx3PMzCV+jLqx6Zue748n2mRgNYYA=
szStartTime: 0001-01-01T00:00:00
szLastNotificationTime: 2009-04-05T09:16:42.27
szGameVersion:
dwHostPlayerID: 16512
dwHostPort: 0
dwMinPlayers: 2
dwMaxPlayers: 10
dwGameTypeID: 6
dwGameMapID: 57
dwNumPlayers: 5
dwGameID: 110957
bRanked: 1
bPrivate: 1
dwHostTeamID: 0
dwHostEntityID: 0
dwWinningTeamID: 0
info: >>>Entering CVPInterface::UpdateGameData()
info: >>>Exiting CVPInterface::UpdateGameData()
info: Calling CVPUpdateGame. gameDataXML [len]: [3530]
info: CVP_GameData:
szGameName: Pantheon (Beta 3) Match
szHostPlayerName: Luminance
szHostIPAddress: 218.185.27.173
szPassword: f0dbb4cf-83fa-48bc-8
szMapName: Crucible
szGameSpecificXML (size): 3530
szGameGUID: 310a2cad-fadd-4c1f-b7a8-e8fd65d80471
szGameToken: FGwgwUFlgN8BaKkBT23w9AmMa/D8bH9I95HuufI5AcB9Ph1Rxj8dCISPM/SAcijgDArCgUTseF1Tj2yIEbe1y4FR0VUGO/tVT1uYuRcEnE7ohjA7QLElST+ZQyESqRw/SHAZ4sBXwqIWqzBvVX+cYtmeC5dhkt+EeQO7COxbztoRvMUdHSECHf/TlxHw60EanxsMztlbOmzuBVxC5HZABy8KK0GzCVpmK5VeWB5aFxnY/V3dE8qa7WVJHFJs6B0QA6O4x0n5QDMZkxqKMR4kmMCz1+uf6BPFJ0eNR7giKXYMDEAUD4RERlxylZLNXns9V6h15wiUiXod+Fdf8Dh2blPm0ncgwldqGQ7AVKlejlcasKb4IasUM0maybJkXKsIjEtt26Ej5GfLlJnHcPSnQkg4L7Pk6O+M4ahBg4yPZzhifgXx3PMzCV+jLqx6Zue748n2mRgNYYA=
szStartTime: 0001-01-01T00:00:00
szLastNotificationTime: 2009-04-05T09:16:42.27
szGameVersion:
dwHostPlayerID: 16512
dwHostPort: 0
dwMinPlayers: 2
dwMaxPlayers: 10
dwGameTypeID: 6
dwGameMapID: 57
dwNumPlayers: 5
dwGameID: 110957
bRanked: 1
bPrivate: 1
dwHostTeamID: 0
dwHostEntityID: 0
dwWinningTeamID: 0
info: >>>Entering CVPInterface::UpdateGame()
info: >>>Exiting CVPInterface::UpdateGame()
info: >>>Entering CVPInterface::GetGameData()
info: >>>Exiting CVPInterface::GetGameData()
info: >>>Exiting CVPInterface::UpdateGame()
info: >>>Entering CVPInterface::GetGameData()
info: >>>Exiting CVPInterface::GetGameData()
info: Attempting to add an AI player[Snoogles] that we cannot find in the AIPlayerName map.
info: Adding name/ID mapping:[Snoogles:20000000]
info: Attempting to add an AI player[Stefan-Matte] that we cannot find in the AIPlayerName map.
info: Adding name/ID mapping:[Stefan-Matte:20000002]
info: Attempting to add an AI player[rs2005] that we cannot find in the AIPlayerName map.
info: Adding name/ID mapping:[rs2005:20000004]
info: >>>Entering CVPInterface::StartGame()
info: >>>Exiting CVPInterface::StartGame()
info: AutoLobby:LaunchGame
debug: Loading module '\000/lua/ui/help/gametips.lua\000'
debug: Loading module '\000/lua/ui/game/loading.lua\000'
info: Sounds process locked
info: Saving replay to "C:\Documents and Settings\Ben\My Documents\My Games\Gas Powered Games\Demigod\replays\Luminance\LastGame.DGReplay"
warning: Granny: FileReading (C:\work\forge\beta\code\src\libs\granny\granny_file_info.cpp(152): File has run-time type tag of 0x8000002d, which doesn't match this version of Granny (0x80000026). Automatic conversion will be attempted.)
warning: invalid technique specified in terrain material: index 0 out of 0
