I have an HDA that I brought into Unreal using Houdini Engine. This works great, however whenever I include other HDAs inside the one I imported in Unreal that are not included with the ones installed into Houdini (ones I normally specify in my HOUDINI_OTLSCAN_PATH), they do not work. I am guessing I need to specify a path for Unreal to pick those up?
We are doing it by specifying those paths through HOUDINI_OTLSCAN_PATH in our startup scripts in Linux, but are working in Unreal in Windows. What is the best way for Unreal to pickup those extra HDAs so I can include all of the ones I have over in Linux.

Hi,

You could use a custom environment file for the UE4 plugin, one that would specify the value for “HOUDINI_OTLSCAN_PATH”.

Then, in UE4, go to project settings > Houdini Engine, and point “Houdini environment files” (under Houdini Engine initialization“) to that custom .env file.


Alternatively, you can also specify your HOUDINI_OTLSCAN_PATH value directly in ”Otl search path".