I have just updated to Blender 2.79 and was playing around with the updated ANT landscape add-on when I noticed a new option called Landscape Eroder, this has the potential to be really cool but I can't seem to get it to erode the landscape mesh. All it does is sit for a while processing and before spiting out vertex groups.
What do I with these? They are vertex groups so I can't use them in materials and their doesn't seem to be another part of the add-on that can use them.
Edit: Here is some extra information. All I did was add a landscape with the ANT add-on, the only thing I changed from the default vales is the x and y subdivisions, which I changed to 256 by 256. Then I ran the landscape eroder tool from the landscape tools section of tools panel, leaving it on the default values. It then proceeds to hang for a few seconds, apparently processing, as blender's CPU usage jumps. Afterward the only change is the addition of 10 new vertex groups and the model being triangulated. I am using Blender 2.79 on a mid 2015 Retina Display iMac running OS X 10.11.6.