Issue #23256: QF_ActorHello_CIS_Manager_00175B77 - cannot call DoMyThing() on a none object:
Update to Bg #20519:
With that fix in place, not all of the errors were gone. Debugging has shown that the fix works as intended, i.e. the alias is not empty when the end fragment of the quest tries to access it. It also turned out however that not all refs that may end up in that alias have an AttractionObjectScript attached (some refs are actors, and those usually don't run that script), and this is what's causing the remaining errors.
Which means that we also need a sanity check, like so:
AttractionObjectScript AOS = Alias_myObject.getReference() as AttractionObjectScript