Hey bro, Good observation, the log was accurate in finding the problem. This: When an enemy delivers the killing blow to your summon (whether in solo or normal mode), the game registers that enemy as the current acting subject.
When the plugin notices the summon died, it tries to remove it from the field and checks `subject.actorId()`. Since enemies do not have actor IDs, the game crashes.
I added a safety lock to the version 4.5 file that checks if the subject is indeed an actor and if it has the property that the function is trying to access before crashing everything.
Could you download the version 4.5 file again and test if the solution was effective, please? Thank you for the message and all the support! Let me know if you need anything!