Hello, New here & need some help please.

Bought and Installed Houdini Indie Commercial 15.5.565 Unreal Edition

After watching a few tutorials about setting up the Procedural Pipe Line. Houdini started to show red flags or red nodes. I'm sure I did something wrong along the way.

1st a crash. Then anything from ORBOLT does not work or what I expect to work is not displaying properly. Okay beginners mistakes. Reboot try again. Then Errors and most tools do not work and then crash Houdini. At this point I assumed that Reinstalling would help. The Online Wizard says to try to install a Stand Alone Version however I was never prompted to do SO. After many tries I managed to Reinstall and get Licensing working again.


I can now launch Houdini however every time I do. I get this Error

Error: Couldn't remove old operator type definition sesi_temporary:op/attribvop
Error: Couldn't remove old operator type definition sesi_temporary::sesi_temporary:op/attribvop

Also most tools like Ocean FX & Pyro FX fail. Then Show me a long list of Errors and crash Houdini.

I sent in for email Support however It is a Holiday and A weekend. I have been searching the forums for the problem and the key words i search for reveal a “Successful Search Nothing Found”.

I looked for a save folder possibly showing me what Error Logs could add as an attachment. I have not found this folder if there is one.

Questions :

How do I fix the errors above?

What steps will I need to follow?

UPDATE : Please open the Windows->Operator Type Manager, look for those two assets under
“Installed Assets” and delete them.

Thank You Side FX Support Team


Is there a Save Folder Showing me My Error Logs like I would see in Unreal Engine Editor?

Have you checked the hardware minimum requirements page? Houdini is crashy on low end hardware. Also most Mac systems do not meet the minimum requirement for VFX computing. Post your hardware and OS in your signature.

FIXED by Following the Steps

Open Side FX then Open Windows->Operator Type Manager, look for those two assets under
“Installed Assets” and delete them.

I actually did a search for the definitions then hit Enter in the Search Field inside Operator Type Manager.