water4 - Gerstner Displace Values Missing

Hello. I'm using Unity 5 Pro, and trying to get Water4 to work, but am having a major issue with it. When I go to edit the properties of the waves, it won't let me as there are no values available in the Gerstner Displace Values Script in the Editor (see attached image, although I'm not sure if it attached, so here's another place: https://dl.dropboxusercontent.com/u/1269194/Screenshot%202015-06-07%2020.05.37.png). According to Unity (here: https://unity3d.com/learn/tutorials/modules/beginner/graphics/water-effects), there should be a load of values to edit.

I did discover these same values in the material, but before I start messing with that, I thought I'd check with everyone else.

Does anyone have any ideas about this?