There is the directory C:\Program Files\MAXON\CINEMA 4D R12\plugins\Unity-C4DToFBXConverter with 5 different files in it, so I guess it has been installed properly. The files are:
OS is Windows 7 Professional 64bit, Plugin “Version” reads “Plugin version: 3.03;”
Cinema4D does not export phong edge breaks to the FBX format which means you cannot bring a model into Unity from C4D that has both phong edge breaks and animation.
My personal solution to this was just to not use C4D with unity, as much as I’d like to, this missing functionality makes it unusable for me.
Just something to consider before you invest too much time in C4D + Unity.