Skatter dont working properly

SketchUp version :2017
Skatter version (Skatter dialog > Options > About) : Student
OS : windows 10
Description of the issue : Skatter
Are you able to reproduce the issue every time? (If yes, how?) :
Error in Ruby Console? (Window > Ruby Console) :
I am trying to apply on a surface grass and is not working properly

This should answer your question: FAQ - Skatter v1 Help