Assertion failed on preview actor

Hi people

sorry i didn’t know where you post this,
After reading the README and getting it loaded up.

however i can load the project under UE 4.7 preview 8

although when i play the project, the error message comes up as…

Assertion failed: IsValid() [File:G:\UT4\UnrealTournament-master\UnrealTournament\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 658]

KERNELBASE.dll!UnknownFunction (0x000007fefd6a9e5d) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() (0x000007feedb47d64) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor-Core.dll!FOutputDevice::Logf__VA() (0x000007feed9c78f8) + 159 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor-Core.dll!FDebug::AssertFailed() (0x000007feed9a8b67) + 62 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\core\private\misc\outputdevice.cpp:224]
UE4Editor-UnrealTournament.dll!UUTLocalPlayer::UpdatePresence() (0x000007fedefac22e) + 59 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\source\unrealtournament\private\utlocalplayer.cpp:1326]
UE4Editor-UnrealTournament.dll!AUTBasePlayerController::ClientSetPresence_Implementation() (0x000007fedee3125f) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\source\unrealtournament\private\utbaseplayercontroller.cpp:249]
UE4Editor-UnrealTournament.dll!AUTBasePlayerController::execClientSetPresence() (0x000007fededf65dc) + 460 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\source\unrealtournament\public\utbaseplayercontroller.h:10]
UE4Editor-CoreUObject.dll!UFunction::Invoke() (0x000007fef1621f64) + 15 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\coreuobject\private\uobject\class.cpp:3684]
UE4Editor-CoreUObject.dll!UObject::ProcessEvent() (0x000007fef170e95b) + 32 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:920]
UE4Editor-Engine.dll!AActor::ProcessEvent() (0x000007fee2ee56d3) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\engine\private\actor.cpp:529]
UE4Editor-UnrealTournament.dll!AUTBasePlayerController::ClientSetPresence() (0x000007fedf351839) + 58 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\intermediate\build\win64\inc\unrealtournament\unrealtournament.generated.1.cpp:1445]
UE4Editor-UnrealTournament.dll!AUTGameMode::UpdatePlayersPresence() (0x000007fedef13b3a) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\source\unrealtournament\private\utgamemode.cpp:2640]
UE4Editor-Engine.dll!AGameMode::PostLogin() (0x000007fee30df500) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\engine\private\gamemode.cpp:251]
UE4Editor-UnrealTournament.dll!AUTGameMode::PostLogin() (0x000007fedef0f287) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\unrealtournament\source\unrealtournament\private\utgamemode.cpp:2050]
UE4Editor-Engine.dll!UWorld::SpawnPlayActor() (0x000007fee326c918) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\engine\private\levelactor.cpp:600]
UE4Editor-Engine.dll!ULocalPlayer::SpawnPlayActor() (0x000007fee32f8853) + 51 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\engine\private\localplayer.cpp:241]
UE4Editor-Engine.dll!UGameInstance::StartPIEGameInstance() (0x000007fee30f003c) + 44 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\engine\private\gameinstance.cpp:198]
UE4Editor-UnrealEd.dll!UEditorEngine::CreatePIEGameInstance() (0x000007fee6d70a14) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\editor\unrealed\private\playlevel.cpp:2861]
UE4Editor-UnrealEd.dll!UEditorEngine::PlayInEditor() (0x000007fee6db9410) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\editor\unrealed\private\playlevel.cpp:2212]
UE4Editor-UnrealEd.dll!UEditorEngine::StartQueuedPlayMapRequest() (0x000007fee6dd4d83) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\editor\unrealed\private\playlevel.cpp:974]
UE4Editor-UnrealEd.dll!UEditorEngine::Tick() (0x000007fee6b0ddc4) + 13 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\editor\unrealed\private\editor.cpp:1226]
UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() (0x000007fee6fc8236) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\editor\unrealed\private\unrealedengine.cpp:347]
UE4Editor.exe!FEngineLoop::Tick() (0x000000013fe10ca3) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\launch\private\launchengineloop.cpp:2257]
UE4Editor.exe!GuardedMain() (0x000000013fe038bc) + 0 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor.exe!GuardedMainWrapper() (0x000000013fe0392a) + 5 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor.exe!WinMain() (0x000000013fe12c49) + 17 bytes [g:\ut4\unrealtournament-master\unrealtournament\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor.exe!__tmainCRTStartup() (0x000000013fe13c19) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll!UnknownFunction (0x00000000775f652d) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x000000007772c541) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x000000007772c541) + 0 bytes [UnknownFile:0]

Any help will be appreciated.

Kind Regards

Actually, i spoke to someone on chat

the answer to my problem is on this link