I'm using 3ds max 2015 and Forest Pro 424 for some weeks and it runs very well.
For a couple of days max chrashes, when I start rendering with NVIDIA mental ray.
I reinstall max, reinstall Forest. Always the same problem. Rendering with the old Scanline there are no chrashes. Only with mental ray.
Using Forest with only 1 tree as a billboard with 1 plane -> chrashes when start rendering.
Any idea what can I do?