"Could not be compiled. Try rebuilding from source manually."

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2

Try opening the Visual Studio solution and building the project from there. If that doesn’t work try clearing the derived files like this…

  1. Close Unreal and Visual Studio
  2. Delete the following folders: Binaries, Build, Intermediate, Saved
  3. Delete the Visual Studio or Xcode solution file (.sln or .xcodeproj)
  4. Re-open Unreal

Good luck!

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