Nativization of project failed

Hi,

I wanted to try out the nativization feature on our project, but unfortunately it fails.

The error points to a blueprint asset, so as a test, I tried to exclude that.
The error then pointed to another blueprint asset, but exactly the same error.
So I excluded that one too and after that it resulted in many errors with different blueprint assets.

Here is a log of the first error, without anything excluded.
Any idea?

[2016.07.13-21.17.36:936][613]MainFrameActions: Packaging (Windows (64-bit)): Project.Cook: ********** COOK COMMAND COMPLETED **********
[2016.07.13-21.17.36:936][613]MainFrameActions: Packaging (Windows (64-bit)): Project.Build: ********** BUILD COMMAND STARTED **********
[2016.07.13-21.17.36:936][613]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe ****** Win64 Development -Project="D:\*** ***\******.uproject" -clean "D:\*** ***\******.uproject" -PLUGIN "D:\*** Di
[2016.07.13-21.17.36:936][613]MainFrameActions: Packaging (Windows (64-bit)): nos\Intermediate\WindowsNoEditor\NativizedAssets\NativizedAssets.uplugin" -remoteini="D:\*** ***" -nobuilduht -NoHotReloadFromIDE
[2016.07.13-21.17.36:936][613]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Performing full C++ include scan (building a new target)
[2016.07.13-21.17.37:602][615]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 0,8979252s to run UnrealBuildTool.exe, ExitCode=0
[2016.07.13-21.17.37:603][615]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe ****** Win64 Development -Project="D:\*** ***\******.uproject"  "D:\*** ***\******.uproject" -PLUGIN "D:\*** ***\In
[2016.07.13-21.17.37:603][615]MainFrameActions: Packaging (Windows (64-bit)): termediate\WindowsNoEditor\NativizedAssets\NativizedAssets.uplugin" -remoteini="D:\*** ***" -noxge -generatemanifest -NoHotReloadFromIDE -ignorejunk
[2016.07.13-21.17.38:605][618]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 0,8060208s to run UnrealBuildTool.exe, ExitCode=0
[2016.07.13-21.17.38:605][618]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe ****** Win64 Development -Project="D:\*** ***\******.uproject"  "D:\*** ***\******.uproject" -PLUGIN "D:\*** ***\In
[2016.07.13-21.17.38:605][618]MainFrameActions: Packaging (Windows (64-bit)): termediate\WindowsNoEditor\NativizedAssets\NativizedAssets.uplugin" -remoteini="D:\*** ***" -noxge -NoHotReloadFromIDE -ignorejunk
[2016.07.13-21.17.38:606][618]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Creating makefile for ****** (no existing makefile)
[2016.07.13-21.17.38:935][619]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Performing full C++ include scan (no include cache file)
[2016.07.13-21.17.41:269][626]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Parsing headers for ******
[2016.07.13-21.17.41:269][626]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool:   Running UnrealHeaderTool "D:\*** ***\******.uproject" "D:\*** ***\Intermediate\Build\Win64\******\Development\******.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -Unattended -W
[2016.07.13-21.17.41:269][626]MainFrameActions: Packaging (Windows (64-bit)): arningsAsErrors -installed
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: D:/*** ***/Intermediate/WindowsNoEditor/NativizedAssets/Source/NativizedAssets/Public/BP_Pickup_Base__pf3274585478.h(89) : ExposeOnSpawn - Property cannoty be exposed
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Error: Failed to generate code for ****** - error code: OtherCompilationError (5)
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: UnrealHeaderTool failed for target '******' (platform: Win64, module info: D:\*** ***\Intermediate\Build\Win64\******\Development\******.uhtmanifest).
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 7,5273941s to run UnrealBuildTool.exe, ExitCode=5
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Command failed (Result:5): C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe ****** Win64 Development -Project="D:\Dash
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)): ing ***\******.uproject"  "D:\*** ***\******.uproject" -PLUGIN "D:\*** ***\Intermediate\WindowsNoEditor\NativizedAssets\NativizedAssets.uplugin" -remoteini="D:\*** ***" -noxge -NoHotReloadFromIDE -ignorejunk. See logfile for details: 'UnrealBuildTool
-2016.07.13-23.17.38.txt' 
[2016.07.13-21.17.45:931][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.CommandUtils.RunAndLog(String App, String CommandLine, String Logfile, Int32 MaxSuccessCode, String Input, ERunOptions Options, Dictionary`2 EnvVars)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.CommandUtils.RunUBT(CommandEnvironment Env, String UBTExecutable, String CommandLine, String LogName, Dictionary`2 EnvVars)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.UE4Build.BuildWithUBT(String TargetName, UnrealTargetPlatform TargetPlatform, String Config, FileReference UprojectPath, Boolean ForceMonolithic, Boolean ForceNonUnity, Boolean ForceDebugInfo, Boolean ForceFlushMac, Boolean DisableXGE, String InAddArgs, Boolean
 ForceUnity, Dictionary`2 EnvVars)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.UE4Build.Build(BuildAgenda Agenda, Nullable`1 InDeleteBuildProducts, Boolean InUpdateVersionFiles, Boolean InForceNoXGE, Boolean InUseParallelExecutor, Boolean InForceNonUnity, Boolean InForceUnity, Boolean InShowProgress, Dictionary`2 PlatformEnvVars, Nullable
`1 InChangelistNumberOverride, Dictionary`2 InTargetToManifest)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at Project.Build(BuildCommand Command, ProjectParams Params, Int32 WorkingCL, ProjectBuildTargets TargetMask)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at BuildCookRun.DoBuildCookRun(ProjectParams Params)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.BuildCommand.Execute()
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Execute(List`1 CommandsToExecute, CaselessDictionary`1 Commands)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Process(String[] CommandLine)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.MainProc(Object Param)
[2016.07.13-21.17.45:932][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param)
[2016.07.13-21.17.45:933][639]MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.Main()
[2016.07.13-21.17.45:933][639]MainFrameActions: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=5 (5)
[2016.07.13-21.17.45:933][639]MainFrameActions: Packaging (Windows (64-bit)): Domain_ProcessExit
[2016.07.13-21.17.45:933][639]MainFrameActions: Packaging (Windows (64-bit)): copying UAT log files...
[2016.07.13-21.17.45:933][639]MainFrameActions: Packaging (Windows (64-bit)): BUILD FAILED
[2016.07.13-21.17.45:933][639]PackagingResults:Error: Error Unknown Error
[2016.07.13-21.18.49:070][152]LogWindowsTextInputMethodSystem:Display: IME system now deactivated.
[2016.07.13-21.18.49:070][152]LogWindowsTextInputMethodSystem:Display: IME system now deactivated.