Hi guys and gals, Problem: When upgrading from windows 8 pro x64 to windows 8.1 x64 pro wmc from murphy78 iso i get this error: This upgrade path is not supported. I even follow the readme and delete the el.cfg in the source folder by copying the windows 8.1 iso to a new folder and deleting the file. Deletion of El.CFG still cause the error. Anyone has a solution? Thank you in advance.