Hello!

I am relatively still a beginner in Houdini, but I've recently started a project where I am attempting to make a terrain that can be put into Unreal Engine. Everything was going fine, making assets and the terrain, but I decided to add a river simulation.

My problem is that the Flip Fluid Object won't correctly cook my SOP geometry. I have done this through a manual DOP and the flip fluid shelf tool, and get the same error. I need the Input Type to be set at Surface SOP, but the object only appears with Particle Field selected.

Here are the two tutorials I've been using to try to make this river sim:
- https://www.youtube.com/watch?v=AM5LqXjmKlA [www.youtube.com]
- https://www.youtube.com/watch?v=Wu_lcMbfTAA [www.youtube.com]

I have also attached screenshots of what errors I am getting within Houdini 20.0.590