Game ANimation Sample Crash

Development Programming & Scripting
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1

Hey, i was trying to opern the realy cool game animation sample from Epic Games, with unreal engine v5.5.3, but it cept crashung. I also wanna notice that it skipped the part wehere it normaly compiles the sahders at first boot.

This was the Crash message:
Assertion failed: Pair != nullptr [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 690]

UnrealEditor_SlateRHIRenderer
UnrealEditor_SlateRHIRenderer
UnrealEditor_SlateRHIRenderer
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

2

Make sure you have all required plugins installed and they are correct versions.

3

I activated all nesesarry Plugins and it crashed again and said that:

Assertion failed: Pair != nullptr [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 690]

UnrealEditor_SlateRHIRenderer!USlateRHIRendererSettings::GetSlatePostSetting() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateRHIRenderer\Private\SlateRHIRendererSettings.cpp:78]
UnrealEditor_SlateRHIRenderer!USlateFXSubsystem::OnPreWorldInitialization() [D:\build++UE5\Sync\Engine\Source\Runtime\SlateRHIRenderer\Private\FX\SlateFXSubsystem.cpp:113]
UnrealEditor_SlateRHIRenderer!V::TBaseUObjectMethodDelegateInstance::ExecuteIfSafe() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:667]
UnrealEditor_Engine!TMulticastDelegateBase::Broadcast<IBaseDelegateInstance<void __cdecl(UWorld * __ptr64,FWorldInitializationValues),FDefaultDelegateUserPolicy>,UWorld * __ptr64,FWorldInitializationValues>() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\MulticastDelegateBase.h:257]
UnrealEditor_Engine!UWorld::InitWorld() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\World.cpp:2117]
UnrealEditor_Engine!UWorld::InitializeNewWorld() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\World.cpp:2425]
UnrealEditor_Engine!UWorld::CreateWorld() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\World.cpp:2518]
UnrealEditor_Engine!UEngine::Init() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\UnrealEngine.cpp:2173]
UnrealEditor_UnrealEd!UEditorEngine::InitEditor() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:946]
UnrealEditor_UnrealEd!UEditorEngine::Init() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1306]
UnrealEditor_UnrealEd!UUnrealEdEngine::Init() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:96]
UnrealEditor!FEngineLoop::Init() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:4849]
UnrealEditor_UnrealEd!EditorInit() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdGlobals.cpp:110]
UnrealEditor!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:166]
UnrealEditor!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:123]
UnrealEditor!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:277]
UnrealEditor!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:317]
UnrealEditor!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

4

Delete project, create new with Gama Animation Sample. Try again opening fresh one.

If it crashes, delete that sample from unreal cache folder, download it again for your Unreal Engine version. And create empty project again.

If that crashes again, check all dependencies you need for Unreal Engine 5.

And double check if your hardware has support for all shaders, memory etc.

And Double check free space on both unreal cache(storage) drive and on drive with projects.

5

Thanks i will try that

6

Ok now i see that when i download the Game animation saple there stants 5.5.1 but the only unreal engine version i got is 5.5.3! Could that be the reason. but there is any other 5.5 version for unreal to download

7

That is minor engine version difference, should be fine. However if you have free bandwidth you can test it with exact version.

You can always make some top down or 3rd person project and enable all plugins required for game animation sample. To make sure it is not plugins.

And check free space on drive where unreal keeps all library stuff.

8

ok thanks, i have over 250GB of free storage and only one ssd so it should be fine. it also worked before, i only uptadet to from 5.4 to 5.5 because the nvidea plugin was avalable for 5.5 now. And then i also updatet game animation sample to 5.5 and then the crashing staret

i will try some more stuff maybe it will work. or its an engine problem idk

9

You can always install bit older unreal engine (you can have more than one engine installeld) that works with game animation sample project, load it there, check it.

Then try to migrate/change to never version etc, after you confirmed it works on your pc with older engine.

If it does not, well you can always learn it in older engine, and try after some updates again with newest engine build.

10

Hey Bro, Thank you for your help. I dont realy now why but now it works thank you