Hi,

I’m running into a frustrating issue. I spent about three hours grooming my hair guides. After adding a Hair Generate node, I went back to modify one of the guides, and now I’m getting this error:

Invalid skinprim attribute values found on guide curves.
You can create correct values using a Guide Skin Attrib Lookup SOP.


While the error suggests a solution, I’m not sure where or how to apply it in my setup. I am still a beginner.

Currently, my network is structured like this: Source Geometry → Guide Groom → Hair Generate at the object level. For some reason, Hair Generate keeps causing issues, even if I replace it with a new node.

Could someone please advise me on how to fix this without losing my existing grooming work? Or is generally a bad practice to modify the guides after the hairgen node has been added? I hope this is not the case afterall it is suppose to be procedural.

I really appreciate any guidance.

here are some images:

Thank you in advance.

Regards,
Chris

It's hard to know what's going on there w/o a hip file.