This queststep ist wrecked...
in the very first step:
Locayte Akhet the Guild Registrar to finalize registration of Giltekh's new potion
You have to visit Akhet first, otherwise the quest won't be going on!
Seems to be wrong, the quest should start with the second step (Travel to Feladan...)
Travel to Feladan to search for Akhet.
Speak with Tareviel in Feladan about Akhet the Guild Registrar.
Travel out the north western gate...
Keep searching south of the gates.
Speak with one of the Grove Guardians...
Speak to the Grove Guardian about the scream...
Follow Akhet deeper into the forest! Until this step it's working
Next error:
Akhet is wounded and unter attack by a Foul Spectre 0/1 - the first critter spawns, but it is invisible and with name <unknown> unknown
Defeat the second Foul Spectre chasing Akhet. 0/1 - the second critter does not spawn, I've also tried killing the Mighty Blight Spectre that spawns in that area, but that one doesn't count and the quest can't be finished.
Akhet keeps on dying being attacked by the Mighty Bligh Spectre, it's not of a problem as she can be resurrected, but maybe some more hitpoints might help her.