Game crashed on start

Hello.

I am trying to Launch Game on UE 4.8 P4 and it show error:


UE4-Walls Game has crashed and will close

Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Engine\Private\AI\Navigation\NavCollision.cpp] [Line: 438]
Attempt to build nav collision data for /Game/WallPiece_StaticMesh_FromMax.WallPiece_StaticMesh_FromMax:NavCollision_0 when we are unable to. This platform requires cooked packages.

KERNELBASE.dll {0x00007ffa94ec8b9c} + 0 bytes

UE4Game.exe!FOutputDeviceWindowsError::Serialize() {0x00007ff6e71f0337} + 0 bytes

UE4Game.exe!FOutputDevice::Logf__VA() {0x00007ff6e726ab38} + 0 bytes

UE4Game.exe!FDebug::AssertFailed() {0x00007ff6e72324e8} + 0 bytes

UE4Game.exe!UNavCollision::GetCookedData() {0x00007ff6e7bfd095} + 0 bytes

UE4Game.exe!UNavCollision::Setup() {0x00007ff6e7c25194} + 0 bytes

UE4Game.exe!UStaticMesh::CreateNavCollision() {0x00007ff6e82838e5} + 0 bytes

UE4Game.exe!UObject::ConditionalPostLoad() {0x00007ff6e755e395} + 0 bytes

UE4Game.exe!UStaticMeshComponent::PostLoad() {0x00007ff6e849752f} + 0 bytes

UE4Game.exe!UObject::ConditionalPostLoad() {0x00007ff6e755e395} + 0 bytes

UE4Game.exe!EndLoad() {0x00007ff6e75dd42d} + 0 bytes

UE4Game.exe!LoadPackageInternal() {0x00007ff6e75ec5cc} + 0 bytes

UE4Game.exe!UEngine::LoadMap() {0x00007ff6e7af3b4e} + 0 bytes

UE4Game.exe!UEngine::Browse() {0x00007ff6e7a9a71e} + 0 bytes

UE4Game.exe!UGameInstance::StartGameInstance() {0x00007ff6e7d94ee3} + 0 bytes

UE4Game.exe!UGameEngine::Init() {0x00007ff6e7d7736b} + 0 bytes

UE4Game.exe!FEngineLoop::Init() {0x00007ff6e71906c0} + 0 bytes

UE4Game.exe!GuardedMain() {0x00007ff6e718fc08} + 0 bytes

UE4Game.exe!GuardedMainWrapper() {0x00007ff6e718fe5a} + 0 bytes

UE4Game.exe!WinMain() {0x00007ff6e71a1f19} + 0 bytes

UE4Game.exe!__tmainCRTStartup() {0x00007ff6ea1e4b65} + 0 bytes

KERNEL32.DLL {0x00007ffa96e713d2} + 0 bytes

ntdll.dll {0x00007ffa97975444} + 0 bytes

ntdll.dll {0x00007ffa97975444} + 0 bytes


ОК

What’s goes wrong?

How to fix this?

Solved by removing Saved directory…

What saved directory Arthur?

Directory with name “Saved” in my UE project’s folder. I’ve removed it and game started well…

Thanks - sadly mines still not packaging.

Hi Ky_Lane,

Please open a new bug report here on AnswerHub with as many details as you can, including log from your packaged project’s Saved\Logs folder and information in Crash Reporter. Thanks!

Thanks . Will do - Im just a newbie :slight_smile:

I thought I was only one that is encountering this problem. But seriously, what exactly was wrong with this? Is it because of collision we applied in our 3d software? Either applying collision inside of 3D software or in UE4 will make game fail to launch, I don’t understand…

I am still getting this error and none of these sollutions work. I am using new unreal engine 4.9.1 and this is most certainly a bug i cant import a simple box mesh from any 3d program. I have tried absolutely everying. see a one minute video I made to show problem:

Try this: Close Unreal engine, go to your Unreal engine 4 installation folder, find save folder that contains this level, go in there, there are should be 6-8 stuff inside, find folder called “Saved”, deleted it, and start UE, and open that level, now try launching it.
But this is definitely a Bug

Deleting Saved folder cleared this up for me. Thanks!