Saving Caius Thorn Bug


My brother and I are having the problem with inquisitor for the xbox and not able to get pass the mission saving Caius thorn 4/5 mission dose not appear to progress  through the story and was wondering if there was a possibility fix with out having to start over 

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Saving Caius Thorn Bug
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88 days ago
We corrected the issues please check on your characters. 
90 days ago
I have the same issue gametag snakeyef16
91 days ago
Hey I am having the same problem I think. Is this where it says to search the 3 locations?  My gamertag for xbox is GRIM REAPER 949 

92 days ago
Could you tell us your Gamertag? We would like to check on your account.