Packaging Error Unknown error

I executed follow:

  1. create c++ project.

  2. execute in visual studio 2015 (f5).

  3. packagin in unreal editor.

I have not add any code in project.

but occured error!!

I used compiled engine from github source

UATHelper: Packaging (Windows (64-bit)): Running AutomationTool…
UATHelper: Packaging (Windows (64-bit)): CSC : error CS2012: ‘C:\UnrealEngine-4.15.1-release\Engine\Source\Programs\DotNETCommon\DotNETUtilities\obj\Development\DotNETUtilities.dll’??(??) ??? ?? ?? ???ϴ?. ‘‘C:\UnrealEngine-4.15.1-release\Engine\Source\Programs\DotNETCommon\DotNETUtilities\obj\Development\DotNETUtilities.dll’ ???ο? ??? ?׼??? ?źεǾ?
???ϴ?.’ [C:\UnrealEngine-4.15.1-release\Engine\Source\Programs\DotNETCommon\DotNETUtilities\DotNETUtilities.csproj]
UATHelper: Packaging (Windows (64-bit)): RunUAT.bat ERROR: AutomationTool failed to compile.
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults:Error: Error Unknown Error


What’s wrong?

Please help me!

Look in

K:\(Your UE4 Engine)\UnrealEngine-release\Engine\Programs\AutomationTool\Saved\Logs\UAT_Log.txt