This sounds like an installation problem. To work with H18.0.416 you need to use the .391 plugin, that should work fine. Do you have this plugin build configured in your houdini.env file?
Thanks,
-Juanjo
OctaneRender 2019.1 for Houdini Production build 2019.1.5.0
Moderator: juanjgon
In the first post of this topic, you also have additional links to download plugin builds for .348 and .391 (that should work also in .416)
https://render.otoy.com/customerdownloa ... .0.391.zip
Thanks,
-Juanjo
https://render.otoy.com/customerdownloa ... .0.391.zip
Thanks,
-Juanjo