Done Lord of torment HQM progression

In the How the world changes tab we have to kill the lord of torment, but when i get him to half a life and he teleports me to the torment dimension, he does not teleport with me as he shuld and neither is he at the place of the spawning (cowen witch standing stones). I tryed this two times sumoning two imps and using up a stack of diamonds.



I have searched trough the whole puzzle two times and he was nowhere.

Is there a fix to this?

 

Tested him in SP and he teleported with me both times.

 

This is a well-known issue in MP
Once a player has killed him in MP (the first time he ever spawns (first kill, only kill)), he wont respawn in the Torment Dimension.
Emoniph (author of Witchery) is aware of this issue, but cannot pin-point the issue in the code. Tried to patch it several times, but never really fixed it.
Untill Emoniph does patch it, there's not much we can do, I'm sad to say

 

Is the achivement for kiling this boss necesary to unlock other quests or is it final in its line?[DOUBLEPOST=1443832011,1443825379][/DOUBLEPOST]@profrags Told me ingame that the dimension needs to be loaded so that it works, he said that this was the fix on the SF server.

 

The torment dimension needs to be loaded before you drop the boss to half health. So said my source.

 

@Kiriot22 had helped me do this using chicken chunks spot loader to load the torment dimension. I had also done this AFTER the boss was killed by another player.