I use to be able to update the language file and rename blocks for my custom resource packs. However, since the 1.11 update it does not seem to be working. I even tried using the lang file from the 1.11 version, with no success. Does anyone know if there is a way to change it with the new version? One of my resource packs is completely useless without being able to do this.

Any help would be most appreciated.