4.8 crashing when deleting lights from older scenes

no luck searching...
---
I've had this happen a couple times in the past day or so.
---
First time I've gone back to clean up all stuff to more over to iray...
---
program is crashed when I delete lights ...
---
is this a known issue?
I can always just turn them off ..
as long as they're not on ---- they shouldn't effect the renders? Even if I switch to iray
Post edited by alan bard newcomer on