Run it with your config and...
you may end up with an error like this:
Log: Log file open, 06/06/14 23:16:42
Init: Name subsystem initialized
Init: Detected: Microsoft Windows NT 6.2 (Build: 9200)
Init: Version: 3369 (128.29)
Init: Compiled: Dec 5 2005 03:55:07
Init: Command line: DM-1on1-Aerowalk?game=XGame.xDeathMatch ini=UT2004.ini log=server.log -lanplay
Init: (This is Win64 patch version 3369.0)
Init: Character set: Unicode
Init: Base directory: C:\dedicatedserver3339\System\
Init: Ini:UT2004.ini UserIni:User.ini
Init: Build label: Build UT2004_Build_[2004-11-11_10.48]
Init: Object subsystem initialized
Log: Executing Class Engine.ServerCommandlet
Log: Browse: DM-1on1-Aerowalk?Name=Player?Class=Engine.Pawn?Character=Jakob?team=255?game=XGame.xDeathMatch
Log: Collecting garbage
Log: Purging garbage
Log: Garbage: objects: 34709->34701; refs: 390366
Log: Game class is 'xDeathMatch'
Log: VERIFY: Class AMasterServerUplink size problem; Script=1712 C++=1744
Critical: IpDrv C++/UnrealScript class size mismatch
Exit: Executing UObject::StaticShutdownAfterError
Critical: InitSockets
Critical: UTcpNetDriver::UTcpNetDriver
Critical: UTcpNetDriver::InitListen
Critical: ULevel::Listen
Critical: Listen
Critical: UGameEngine::LoadMap
Critical: LocalMapURL
Critical: UGameEngine::Browse
Critical: UGameEngine::Init
Critical: UServerCommandlet::Main
Exit: Exiting.
Log: FileManager: Reading 0 GByte 40 MByte 985 KByte 902 Bytes from HD took 0.153000 seconds (0.138000 reading, 0.015000 seeking).
Log: FileManager: 0.017000 seconds spent with misc. duties
Uninitialized: Name subsystem shut down
Uninitialized: Log file closed, 06/06/14 23:16:44