We get crashes and freezes when rendering with ipr and vfb on many occasions. Its hard to track exactly when or why so I was thinking of putting up one example here for now.
Because these crashes and freezes are a bit random we only sometimes have a crashlog. What informationen do you usually want for these kind of errors. Maybe a debugging tool tracking memory or something? 
Regards alexis
this one crashed when selected framebuffer window and dragged it
crash_vfhlog.txt (1.32 KB)
I reported this a while back, Gosho found out that it is related to running low on system memory
This is how I got it to crash on my laptop..
i get a crash every other render in my scene:
terminal:
2960: Fatal error: Segmentation fault (sent by pid 368271652)
Saving application data to /tmp/houdini_temp/crash.ursa_assetbEnv_mainstreet_main_aleand_v020.alexis.andersson_2960.hip
[2020/Jan/20|16:02:55] VFH | Error| * Geometry node not found!
Spawn Error: : No such file or directory
Error running xmessage
Argument list:
0: xmessage
1: Fatal Error: data saved to /tmp/houdini_temp/crash.ursa_assetbEnv_mainstreet_main_aleand_v020.alexis.andersson_2960.hip
Crash log saved to /tmp/houdini_temp/crash.ursa_assetbEnv_mainstreet_main_aleand_v020.alexis.andersson_2960_log.txt
sh: xmessage: command not found
log and scene without alembic file:
Hello @LeoYfver , I couldn’t reproduce the crash on my side with your or newer nightly build, but I’ve got the same error “* Geometry node not found!”. Issue is reported as HOU-1554 and will inform you when we know something more.