I keep getting a 500 error except I unpublish one of the userid. LIST A id, userid, post LISTB id, userid, postid, comment I want the post and comments on a single list view so I created LISTC (a copy of LIST A) then joined LISTB to it. id->postid LISTC id, userid, post, id, postid, comment ISSUE: When trying to load LISTC I get a 500 error. Says fabrik has generated an invalid query. <br/> If I unpublish either one of the userid the list loads. If I also remove the join, the LISTC loads without issues. I guess fabrik doesn't understand why there can be two different userid in a list. Cos the "commenter" and the "poster" are not the same. It's there a way to solve this?