Rick Warren says: Sometimes Protestants think that Catholics worship Mary like she is another God, but that's not exactly Catholic doctrine and people say what the saints all about, why you are praying to the saints. And when you understand what they mean by what they are saying. There is whole lot more commonality. Now, there is still real differences, no doubt about that, but the most important thing is if you love Jesus we are on the same team.
More info about the deception:
http://www.kotipetripaavola.com/rickwarrenpraisescatholicchurch.html