I'm having an issue. I made a cart with :

• standard hull
• coal engine
• basic wood cutter
• storage front, side and internal
  When I place it on rail he doesn't plant saplings. But he cut trees.
  Does anyone have a solution ?

Here you can find all the files I use in my mod pack.
https://www.dropbox.com/sh/39g9950dzslstyq/AAAbPY8f1hBXXYauFB1dja8Sa?dl=0

@Ventrylock I am not part of the team, but I noticed that sometimes you need to ensure that dirt is actually available 2 levels deep from the surface in order for the cart to plant. So not only dirt where the tree should be planted, but dirt 1 block below that as well.

Ok, that might explain why I cannot get it to happen in my superflat worlds 👍

Thx for reply.
Still not working.
What do you have when you assemble your carts ?

Update the mod and it work now. Thx for try to help guys :)