Unable to find unique name for...

[N0ctrnl]

Ok, so, years ago this error message was usually a result of a script running away while spawning a mob, and thus it couldn't come up with a unique name for them. I am seeing a lot of these errors now, but none of these are script-spawned NPCs:

==> zone-wakening.log <==
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_geonid'

==> zone-kurn.log <==
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'Burynai_excavator'

==> zone-hole.log <==
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_spirit_of_the_old_city'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_spirit_of_the_ruins'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_spirit_of_the_old_city'
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_spirit_of_the_old_city'

==> zone-charasis.log <==
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_sepulcher_skeleton'

==> zone-hole.log <==
[Error] Fatal error in EntityList::MakeNameUnique: Unable to find unique name for 'a_spirit_of_the_ruins'

I have lots and lots of these, and they're in a bunch of zones. I have just noticed this in the last few days, but I'm unsure how long it's been going on. I will go back through old logs and see if I can find when it started.

Has anybody else seen this on their server? I have hundreds of these messages in my log files.

Thanks!