Don’t worry. I’ve removed the version 4.3. Reinstalled a fresh new 4.3.1 and still the same error. BlankProject (wo starter content), new class parent UAnimGraphNode_SkeletalControlBase, in VS adding to build.cs “AnimGraph” at PublicDependencyModuleNames, and compiling with Development_Editor x64.
1>------ Build started: Project: Demo, Configuration: Development_Editor x64 ------
1> Parsing headers for DemoEditor
1>LogTextLocalizationManager : warning : The selected culture ‘es_ES’ is not available; falling back to ‘en’
1>LogCompile : error : Duplicate class name: UK2Node_BaseAsyncTask also exists in file /Script/OnlineBlueprintSupport
1>D:/UE4/Unreal Engine/4.3/Engine/Source/Editor/OnlineBlueprintSupport/Classes/K2Node_LatentOnlineCall.h(8): error : Superclass K2Node_BaseAsyncTask of class K2Node_LatentOnlineCall not found
1>D:/UE4/Unreal Engine/4.3/Engine/Source/Editor/OnlineBlueprintSupport/Classes/K2Node_LeaderboardFlush.h(7): error : Superclass K2Node_BaseAsyncTask of class K2Node_LeaderboardFlush not found
1>D:/UE4/Unreal Engine/4.3/Engine/Source/Editor/OnlineBlueprintSupport/Classes/K2Node_LeaderboardQuery.h(7): error : Superclass K2Node_BaseAsyncTask of class K2Node_LeaderboardQuery not found
1>D:/UE4/Unreal Engine/4.3/Engine/Source/Editor/BlueprintGraph/Classes/K2Node_AIMoveTo.h(9): error : Superclass K2Node_BaseAsyncTask of class K2Node_AIMoveTo not found
1>Error : Failed to generate code for DemoEditor - error code: 2
1> UnrealHeaderTool failed for target ‘DemoEditor’ (platform: Win64, module info: D:\UE4\Projects.4.3\Demo\Intermediate\Build\Win64\DemoEditor\Development\UnrealHeaderTool.manifest).
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets(38,5): error MSB3073: The command ““D:\UE4\Unreal Engine\4.3\Engine\Build\BatchFiles\Build.bat” DemoEditor Win64 Development “D:\UE4\Projects.4.3\Demo\Demo.uproject” -rocket” exited with code -1.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========