Cinderlands Encroaching Shadows quest bugged

[dklm]

The quest is an infinite loop for me and it makes everything else in Cinderlands disappear, like the towns aren't even on the map anymore, it's just empty desert.

 

I finished this quest after killing the Dark Lady and it tells me to go upstairs and speak to a guy.  I speak to him and he tells me to go downstairs and speak to a guy.  And the quest starts over again.  It won't finish and change the settings of the land back to normal.  All the vendors in Yehara's Mirage are gone.  

 

I have completed this quest four times, always it does the same thing.

[821031_1452549945]

maybe cuz the npc u are suppose to protect died? and if this quest is the problem just abandon it and boom u are back to normal city