Hello,
houdini consistently crashes when I try to make 2 point polys out of particle stream using add sop. I tried every option. I achieve the desired effect, but when I go back to frame 1, it crashes. How to remedy this? It's revision 13.0.314.

hello.
see this journal:
https://www.sidefx.com/index.php?option=com_journal&Itemid=213&page=index&journal=default&view=FULL&logfile=ALL&icon=ALL&version=ALL&buildstart=13.0.314&buildend=&perpage=20&search=point+sop&find=Find [sidefx.com]
so you must update your houdini to last version.

thank you very much!