Unreal Engine 5 crashing when loading my level

Development Asset Creation
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1

Hey there,
my Unreal Engine is crashing when loading my main level.
I´ve reinstalled the Engine several times and it´s still not working.

Edit 1:
I thought maybe Unreal Engine cant find the File because I`ve installed it on my C: drive and it looks like the editor is searching for the file on my D: drive.

Edit 2:
I migrated it to an empty project and it works fine. All I had to do is loading all Object manually (World Partitioning)

Edit 3:
Sadly I realised that I can load every Actor but one. Its a Blueprint Class and it contains just a FBX File and a Material. Then I tried to delete it but if the actor is unloaded I´m not able to delete it. Then I deleted the complete Blueprint and every Texture and Material on it. But it´s not working. Is there any way to delete this Actor? I also realised that all Actors got unloaded when I restart the Editor.

I`ve just started with Unreal Engine and here´s the error:

LoginId:2180f0f24be6cfcaa381c78216e311e9
EpicAccountId:b604bfafe0ee440b97cb3bf65ef0d52f

Assertion failed: ActorPtr.IsValid() [File:D:/build/++UE5/Sync/Engine/Source/Runtime/Engine/Private/WorldPartition/WorldPartitionActorDesc.cpp] [Line: 279]

UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_AssetTools
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll
2

I am experiencing the same error but only when testing multiplayer on separate processes.

3

UE5EA crash when you open a world partitioned level from a normal level.
I have compiled the UE5 (not UE5main and not Ue5EA ) from sources and the issue is fixed

4

Yeah I have the same issue when I load levels too many times in UE5 ER2.

5

When unreal crashes, there should be a button to view the directory of the crash log, in the crash log it should show which actor is causing the problem and which folder it is in, you can then go into that folder and delete the uasset.