Problems with choosing Vegetations

[dine4]

When I want to add trees, I can't do it. I've clicked on different trees many times, but it doesn't help. When I add a road, for example, it works. What can I do?

[Arayas]

You can add trees as vegetation to a road/terrain or as models

[dine4]

You can add trees as vegetation to a road/terrain or as models

Ok, i'll try to do it as model. Thanks!