Important: You will need to match the Houdini build to your Unreal plugin version.

If your plugin is not working, you may need to update it to match your Houdini version.

Download the HoudiniEngine-vX.X.X-Y.Y.Y-UEZ.Z-MacOS.zip from the Houdini Engine for Unreal Github repository where X.X.X is the Houdini Engine plugin version, Y.Y.Y is the Houdini version and Z.Z is the Unreal Engine version.

For macOS Apple Silicon, download HoudiniEngine-vX.X.X-Y.Y.Y-UEZ.Z-MacOS-arm64.zip instead.

Unpack the downloaded .zip package. This will extract a HoudiniEngine folder.

Copy the extracted HoudiniEngine folder to the Plugins/Runtime folder of your Unreal directory. You can either copy the directory to the Unreal Engine installation (/Users/Shared/Epic Games/UE_Z.Z/Engine/Plugins/Runtime) or to your Unreal project directory (~/Documents/Unreal Projects//Plugins/Runtime).