I recently installed FP Lite 6.1.5 because I upgraded to V-Ray Next. I now use 3ds Max 2018, but tried on Max 2017 as well. It appears that the Surface parameters are disabled, and it wasn't like that in earlier FP Lite (5.4). I can't add, delete nor update my surface. I can only pick my surface when creating a new forest, then I'm stuck with it.
Should it be that way, or is something corrupt in my installation?