Overridden function's name is already used by it's parent function

Hey. I was able to recreate the error somewhat. Let me know if this was the problem you were facing.

  1. Launched both Unreal Engine and VS.
  2. Added the function to C++ and compiled with live coding
  3. Override the C++ function and It worked
  4. Closed Unreal engine
  5. Open Unreal Engine
  6. Open Blueprint and function was producing the error

If this is the case, you have to build the project from C++ as some VS files for unreal engine might not be generated when using live coding. I hope that helps.