Hello,
I’m encountering a critical issue with my project, Vahron (this one : vemio ).
Each time I attempt to drop an object into the scene, Unreal Engine crashes and displays the following error message:
LoginId:f82001014c7b3b1f8555a4ae63994d1d
EpicAccountId:3f1fe6586f7144019ed9bc66c83ec80c
Assertion failed: bUncompressMemorySucceeded [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/Serialization/Archive.cpp] [Line: 768] Failed to uncompress data in X:/Unreal Engin P/salvos/MyProject2/Content/ThirdPersonBP/Maps/ThirdPersonExampleMap.umap. Check log for details.
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_Landscape
UE4Editor_Landscape
UE4Editor_Landscape
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_UnrealEd
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_UnrealEd
UE4Editor_Engine
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_LevelEditor
UE4Editor_LevelEditor
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_UnrealEd
UE4Editor_LevelEditor
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
user32
user32
UE4Editor_ApplicationCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll
Here’s what I’ve tried so far:
- Deleted: DerivedDataCache, Saved, and Intermediate folders
- Copied and pasted an older version of the map from a backup
- Verified the Unreal Engine installation
- Uninstalled and reinstalled Unreal Engine and Epic Games Launcher
Edited the DefaultEngine.ini file in the project’s Config folder to set a different map as the default:
GameDefaultMap=/Game/AnotherMap
Everything was working fine until I restarted my PC. Now, I am unable to start the project because of the following error:
Error: Assertion failed: NumBytes == Strings.Num()
That one :
LoginId:f82001014c7b3b1f8555a4ae63994d1d
EpicAccountId:a52dc53b003142ed8cf5bad33305a781
Assertion failed: NumBytes == Strings.Num() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/UObject/UnrealNames.cpp] [Line: 3336]
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_AssetRegistry
UE4Editor_AssetRegistry
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll
I found the solution here: Unreal Engine Forum Post (Assertion failed: NumBytes == Strings.Num()) by deleting CachedAssetRegistry.bin.
After that, the second issue was related to the current error with Assertion failed: bUncompressMemorySucceeded in the (ThirdPersonExampleMap.umap). However, I’m not sure if this problem arose due to an incorrect resolution of the (Assertion failed: NumBytes == Strings.Num()) error or if it’s actually the same issue.
If anyone has encountered a similar problem or can suggest further troubleshooting steps, your help would be invaluable.
Thank you very much in advance for your time and assistance.
