I think the Cornett's Call quest may still be bugged on the newest patch version 5.something.
GOG version, Mac.
I have both Cornettes (sp?).
I've reported back to Dereo, and he's sent me to the Huana temple to meet one of his associates.
I already went to the temple earlier from the other side and activated the statue; but I was too low level for the grub fight, so I reloaded and decided to wait, thinking I could always go back in later.
However I might have already "activated" the statue when I saved that game.
Now I've levelled up and feel ready for the fight, but when I want to open the door to the giant cave grub, the statue's hand is completely inactive, even though I have both Cornettes in my inventory under quest items. It's not showing up as blue interactable when I hit tab.
I did do this quest slightly out of order; but is there a fix? I really would not like to reload as I've played quite a bit since.
I also tried to change the party to the companions I had at the time, but no luck.
Thanks and all best