Compiling Android - fatal error : 'wchar.h' file not found

Ok, still no luck I’m afraid. Steps are as follows (after setting up UE4 directory for the first time, and already having VS and tadp-2.0r8-windows.exe installed):

  1. Run setup.bat
  2. Run GenerateProjectFiles.bat.
  3. Open UE4.sln from the root of the install folder.
  4. Once VS has loaded, switch to Development Editor, Win64. Right-click on Engine → UE4 in the UE4 solution and choose rebuild.
  5. Wait ages for that to finish. End of build reports success, no errors.
  6. Switch configuration to Development, leaving it on Win64. Right-click on the Engine → UE4 again in the UE4 solution and choose rebuild.
  7. Wait ages for that to finish too. End of build reports success, no errors.
  8. Leave configuration on Development, switch to Android. Rightclick on Engine → UE4 again and choose rebuild. Same old error (wchar.h not found)
  9. Just in case the code error is a red herring, I switched back to Development editor, Win64 and ran the editor from visual studio. Once the editor opened, I browsed to the Tappy Chicken project, opened it and tried to package it (ETC1) again. Still fails.

Back in visual studio I rebuilt Development Android. Just to confirm I’m not going crazy, here’s what the environment looks like for me:

Upon finished, 1 project failed to compile. Tried Tappy Chicken again. Yup, you guessed it - still not working.