Duplicate class name: UK2Node_BaseAsyncTask

  • On the launcher I click con 4.3.0, then verify and a popup shows me modified files ‘\UE4\Unreal Engine\Launcher\Backup\UE_4.3Production-Windows[2014.07.23-20.43.21]\Engine\Programs\ShaderCompileWorker\Saved\Config\CleanSourceConfigs’
  • After the second verify a no popup is shown and a quick message ‘clean up’ had been shown in the laund button.
  • If I try to open the project a recompiling of code is requested and fails (in the log appears the same error)
  • If I try to open the project anyway, UE4 crashes.
  • If I open VS2013 and try to recompile the solution same error appears.
  • If I verify UE4.3.0 no error appears (but still the VS compiling error)
  • I’m using UE4.3.0 directly from the launcher, not using the UE source code.

Just before this, I tried to migrate a project from 4.2.1 (working and compiling fine) to 4.3.0 vía launcher, and failed. So I decided to migrate the code manually. Then this happened.