This error looks to be complaining about the table and column from the db. If you are not getting errors for the connections file include then you may be referencing the wrong connections file for this. You should try to update the path for this include to point to the connection file that CMS is using, I think if you did this then it would work.
If there continues to be a problem please post back and give us some more details about the connection files that you are using, where they are in your site and what dbs are referenced in them.
