First aid could be here to activate collision in the corresponding object file (e.g. objects/vegetation/common/Jungle_tree7_M1/objects.con )
I see you want to use my revised Swamps of Dagobah Map (original from Dnamro). I put there a lot of Jungle_tree7's into it, scaled up a lot.
I am still working on the tree7, did a new better collision for it. The original collision was very bad.Also I corrected the bad UWV's of some sprites
I still have trouble with the proper export ( so it is still missing in my Redux 0.96 build).
I managed to understand the texture thingie, but ingame, the sprites are not working the way they should do. They dissapear from different views.
But just a matter of time..
When I got it I will send you the files.