due to some mod, Gorion fake needs sarevok: he creates Tamoko, dialog start "where is sarevok"... then nothing.
Talk back to specter Gorion => creates Tamoko, again.
=> i created sarevok.cre , took him in team.
Dialogue proceeded differently: talk between gorion and Sarevok, then tamoko appears, then dialogue between her and Sarevok, then finally fight against specter.
If that's a mod here...
Attached weidu log.