Since it is the demo/lite version, I'm restricted to one 3D tree they provided and I can't do any real-world testing. I find it hard to believe that their tree is that much more efficient.
Just for info: with Forest Lite you can any 3D model, both from external libraries or your own models. Just ...

You also will get a crash with FPP if you have a vegetation asset in your forest list but not in the scene.
For example you deleted a bush from the scene but it is still in teh FPP object list. This will crash max.
Thanks for reporting the problem. I just identified and fixed the bug, it will ...

Not for Jorgernsen, but as general advice: In Forest Pack 4.1.2 we fixed a crashing issue with the Octane material converter, so be sure to use always the latest release.

In any case, we'll be glad to help you in the Forest forum . Don't forget to include minidump file and scene details. If there ...

Probably the geometry generated with all trees is exceeding Display->Limits. In this case you should use RailClone Tools to convert the items to instances, and turn on "Movable Proxy" to the result.

Regarding the material, please be sure the material assigned to RailClone (or the instances if you ...

@mbetke as far as i know RailClone will multiplicate you objects, but will not use them in a proxy way, so if you have something with 100 000 polygons, 10 objects with RailClone will become a 1 object x 1 000 000 polygons. (but maybe i'm wrong)
You can use RailClone Tools (Pro version only) to ...

.. setting up materials ? etc.. also received a lot of crashes when using 3d objects - I guess we covered some of that in here ..
If crashes happen at rendering, probably it is an Octane issue. You can check it converting your items to stand-alone objects, using Forest Tools, and removing Forest ...

Hi, thanks for putting all info together. I will reply the questions directy related with iToo:

2) Octane will ignore the materials that are assigned in the Forest Pro object roll out and that are applied to the whole ForestPro 3dsmax object (iToo has reported this as a bug to Octane and any ...

the trick works but I have always to rename the Octane dlr, because after a working session if I re-open the scene all trees will disappear. Then I close Max, rename the dlr, open the scene again and I'm able to render and work with the trees.
I think it's a bug....
Yes, it is bug. I have sent to ...

acc24ex wrote:also - how about a properly prepared scene to test on - and upload it here - right now I don't know if I'm setting up something wrong or there are bugs from 3dmax octane or itoo

What is the problem exactly ?

I think i have found what is the problem. Please, try the following workaround and tell me if works:

1) Be sure Max is closed.
2) Rename the file Octane3dsmax.dlr in the max plugins folder to any other name. For example zOctane3dsmax.dlr
3) Run Max and render.

To see again the trees in the ...