Editor crashing when trying to load paper sprites during runtime

Development Programming & Scripting
1

Hello, so im using a object library to load assets from disk.

TArray<UObject*> USpriterBlueprintFunctionLibrary::LoadObjectsFromPath(const FString& Path, TSubclassOf<UObject> ObjectClass, TArray<FString> ObjectNames)
{
	UObjectLibrary* ObjectLibrary = UObjectLibrary::CreateLibrary(*ObjectClass, false, GIsEditor);
	if (ObjectLibrary != nullptr)
	{
		ObjectLibrary->AddToRoot();
		FString NewPath = TEXT("/Game") / Path;
		int32 NumOfAssetDatas = ObjectLibrary->LoadAssetDataFromPath(NewPath);

		if (NumOfAssetDatas > 0)
		{
			TArray<FAssetData> AssetDatas;
			ObjectLibrary->GetAssetDataList(AssetDatas);

			TArray<UObject*> Assets;
                    UObject* Asset;

			GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Cyan, TEXT("Found assets, attempting to load!"));

			if (ObjectNames.Num() > 0)
			{
				for (int32 i = 0; i < AssetDatas.Num(); ++i)
				{
					FAssetData& AssetData = AssetDatas[i];

					const FString FoundNameString = AssetData.AssetName.ToString();

					if (!FoundNameString.IsEmpty() && ObjectNames.Contains<FString>(FoundNameString))
					{
                                            Asset = AssetData.GetAsset();
					if (Asset)
					{
						Assets.Add(AssetData.GetAsset());
					}
					}
				}

				return Assets;
			}
		}
	}

	GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Cyan, TEXT("Can't find assets at path!"));
	return TArray<UObject*>();
}

This is the code for the function that is called to load the assets.
This function works without a problem when trying to load AnimSequence’s, but when i try to load Paper Sprite’s im given this error before the crash.

Fatal error: [File:C:\Users\Jacob\Desktop\UnrealEngine4Source\UnrealEngine\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 1969] 
Object Class None created in SpriterSkeleton_C instead of Package // NOTE: SpriterSkeleton_C is the class that is calling this function
2

Does anyone know why this only occurs with Paper Sprite Assets, while every other asset in UE4 loads correctly without crashing the editor?

3

Still having this issue, please ease my pain with a solution!

4

Try this - it worked for me!

“After testing the sample project and reviewing the documentation for LoadAssetDataFromPath (Asynchronous Asset Loading | Unreal Engine Documentation) I noticed that the call you make to LoadAssetDataFromPath() is missing “/Game” at the beginning of the path name. Adding this and recompiling the code should fix the crash.”

Reference: