Forums Houdini Engine for Unreal Issue with HDAs not cooking in UE5.6 (Houdini 21.0)

Issue with HDAs not cooking in UE5.6 (Houdini 21.0)

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shivpatelart3d
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Joined: June 2024
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I’m running into a problem when using my HDAs in Unreal Engine 5.6 with Houdini 21.0.
When I drop my HDA into UE, none of the nodes seem to process at all. The only way I can get results is if I enable Session Sync and then recook inside UE.

Has anyone else run into this, or know if something changed in the way cooking is handled?

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Attachments:
Pipes_Tool_Test.hdalc (10.3 KB)
Before_Session_Sync.png (910.2 KB)
After_Session_Sync_And_Recook.png (954.0 KB)

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DirtPizza
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Works fine for me without Session Sync when using spline actor in the World Input of the HDA.
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ShootingBLIND
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It may be due to a Houdini/Houdini Engine mismatch. You can verify in unreal under HoudiniEngine>Installation info panel.

Make sure you are using Houdini Engine Indie With Houdini Indie.
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