Situation: I downloaded and installed the forest lite 5.1. I tried to follow the online tutorial. Whenever I click the [forest lite] button in "create > itoo software" panel, it showed me an "application error", saying "An error has occurred and the application will now close. Do you want to attempt to save a copy of the current scene?", which then my 3ds Max is shutdown of course.
The funny thing is that if I create the forest in Max 2012, then I seems to be able to open the max file in 2015 and modify the forest.