Today my character discovered Rotheran and freed Adusamsi by killing the wizzard who inprisoned her. After this I pickpocket the Slave Key from one of his followers: Irvisie Othran. Then I freed the slaves in the cells, sneaking by the dremora in the arena. In the end I tried to free the remaining two slaves in the arena but was noticed by the dremora and the cultist. I used a Scroll of Windwalker and dodged the spells and finally reached the exit door.

Now when I load a save from a time after this quest I get a warning:

Unable to find Friendly Group Clone "bonewalkwalker_summon 00000000" in Load for REFR "irvisie otharen 00000000".

Guess Irvisie was pretty pissed seeing her boss Llaren Telano dead, the blade stolen and the slaves escaping so she tried to throw a bonewalker at me exactly when I was going through the door - with so many actors around in this action scene the director lost overwiev and messed up... should I go back for a new take? Or is there a way to get rid of this error?

UPDATE:

replayed this part of the quest and no script error anymore. lost a hour gameplay - nevermind.

This topic can be closed and deleted.

I get this kind of errors pretty often, and they are always harmless in my game.

It is about summoned creatures that were deleted, I think. Next time you save the error goes away.