Formula.Firewall: Query references other queries, so it may not directly access a data source.

For anyone still experiencing this issue, under File > Options, select Privacy, and if it's appropriate, select Ignore privay levels.  Even after following all the other suggestions referenced in this thread, I still got an error when refreshing.  It worked when I was in the Query Editor just fine (no errors), but refreshing from the regular report view would fail.