Packaging Fail with Blueprint Nativization

Fresh install of 4.20 from the launcher, first time trying the blueprint nativization and getting this error when Packaging (Window 64-bit). Bold lines were red in the editor log, any help is appreciated:

UATHelper: Packaging (Windows (64-bit)): BUILD COMMAND STARTED

UATHelper: Packaging (Windows (64-bit)): Running: F:\Engine\UE_4.20\Engine\Binaries\DotNET\UnrealBuildTool.exe FoBHelicopter Win64 Shipping -Project=“D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20\FoBHelicopter.uproject” “D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20\FoBHelicopter.uproject” -NoUBTMakefiles -re
moteini=“D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20” -skipdeploy -noxge -generatemanifest -NoHotReload -log=“C:\Users\User\AppData\Roaming\Unreal Engine\AutomationTool\Logs\F+Engine+UE_4.20\UBT-FoBHelicopter-Win64-Shipping.txt”

UATHelper: Packaging (Windows (64-bit)): Using Visual Studio 2017 14.12.25827 toolchain (D:\Programas\VisualStudio 2017\VC\Tools\MSVC\14.12.25827) and Windows 10.0.16299.0 SDK (C:\Program Files (x86)\Windows Kits\10).

UATHelper: Packaging (Windows (64-bit)): Parsing headers for FoBHelicopter

UATHelper: Packaging (Windows (64-bit)): Running UnrealHeaderTool “D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20\FoBHelicopter.uproject” “D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20\Intermediate\Build\Win64\FoBHelicopter\Shipping\FoBHelicopter.uhtmanifest” -LogCmds=“loginit warning, logexit warning, logda
tabase error” -Unattended -WarningsAsErrors -installed

UATHelper: Packaging (Windows (64-bit)): D:/Unreal Engine/+TEST/FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20/Intermediate/Plugins/NativizedAssets/Windows/Game/Source/NativizedAssets/Public/FOBxHelicopterInterface__pfG752328212.h(1): Error: Class ‘UFOB’ must inherit UObject or a UObject-derived class

UATHelper: Packaging (Windows (64-bit)): Error: UnrealHeaderTool failed for target ‘FoBHelicopter’ (platform: Win64, module info: D:\Unreal Engine+TEST\FoBHelicopter - PlayableDemo 0 - Copy (3) 4.20\Intermediate\Build\Win64\FoBHelicopter\Shipping\FoBHelicopter.uhtmanifest, exit code: OtherCompilationError (5)).

UATHelper: Packaging (Windows (64-bit)): Took 35.5276344s to run UnrealBuildTool.exe, ExitCode=5

UATHelper: Packaging (Windows (64-bit)): ERROR: UnrealBuildTool failed. See log for more details. (C:\Users\User\AppData\Roaming\Unreal Engine\AutomationTool\Logs\F+Engine+UE_4.20\UBT-FoBHelicopter-Win64-Shipping.txt)

UATHelper: Packaging (Windows (64-bit)): (see C:\Users\User\AppData\Roaming\Unreal Engine\AutomationTool\Logs\F+Engine+UE_4.20\Log.txt for full exception trace)

UATHelper: Packaging (Windows (64-bit)): AutomationTool exiting with ExitCode=5 (5)

UATHelper: Packaging (Windows (64-bit)): BUILD FAILED