Can any one help me with the attached H 11 file.
I keep having error when i open it in H 12.
In H 11 I do not have problem.
I built the file in H 11 and trying to open it in H 12.
But, I keep having errors in the sop.
Can any one help me and fix the errors.
Thank you very much.

I think its something to do with how edges are handled in the poly split in H12 new feature. To get round it just write the model out to disk as a bgeo , then read the file in in H12 and carry on.

Rob

I did try it already. But, I have some other problem in shop for that particular obj when I open it in H 12, I can not set geo light in that obj, I believe because of the original problem in sop. I have spent long days and months to figure it out to set geo light for the obj w/o any success yet.
Can you help me please further ? Thank you
Steve

your problem is related to the bug in Blast SOP that was in older builds
in your file it's leaving degenerate primitives
then the polysplit is cutting some primitives by their number
so after the bug was fixed (namely: Houdini 12.0.661: The blast SOP will now correctly delete degenerate primitives when deleting point groups.) degenerate primitives are being deleted and therefore the polysplit is erroring because it cannot find primitives which it should split since all numbers were shifted
there is no simple fix for that only to open your scene in pre H12.0.661 and save the obj as circusmonkey suggested

and I had no problem using that exported geometry as geometric light, can you post a scene with your problem
(make sure you have Transform Into This Obj checked on your geo light if you have problems with alignment to the original geometry)

Thank you very much.
I do not have any problem with that file in H 11. But having problem with H 12.
Also, Geo light is not working in both H 11 and H 12. Sometimes works in H 11. Never works in H12. I wonder why ?
Can you help me further ?
Thanks. I did select the transform into the obj.