Troubles with Procedural Foliage Spawner

Hi everyone. I got some troubles with Procedural Foliage Spawner(PFS) in UE4.18. After creating a copy of a project from 4.16.3 to 4.18 when I create a PFS and try to Resimulate it’s give me an error “Unable to spawn instances. Ensure a large enough surface exists within the volume”. But when I create a new one it’s works fine. And the same project on 4.16 have same problem with PFS. But it’s works fine on BSP’s and Static Meshes. Problems only on Landscapes
Anyone knows how to fix this?
Thanks in advance

I ran into the same problem just today. I recommend to check the “Height” values under “Placement” tab listed on the Foliage Type being used by your Procedural Foliage Spawner. If that range is 0…0 or if it doesn’t cover the elevation of where your surface is, that seems to be the what is causing the Spawner to fail (at least in my case). Try changing Min to big value like -260000 and Max to 260000 and see if that helps.

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