I went to see the movie, and although parts of it had elements of truth, the assertions and assumptions they made were fictitious and hard to prove. I am not so arrogant as to believe that God preserved only what He wanted preserved and that is what exists today. I think there is a lot that Constantine changed or altered, and I think there is a lot that we don"t know about. It is also arrogant for people to assume they know the mind of God and spout off what they think He is all about. It simply is preposterous to think that all of the Bible texts are in their original form and exactly how the authors wrote them, and exactly how God intended it to be. We have to depend on what God tells us by his Spirit and we have to go with what we innately know is right. I , for one, don't believe for one second that for the four or five centuries that the Catholic church had sole possession of the Bible that some altering didn't go on and biblical texts were rewritten or even deleted. The Catholic church back then was all about power and money, otherwise we wouldn't have had Martin Luther posting his 95 theses on the door of the church. No one can tell me that sacred texts weren't altered or hidden to further the power of the Church. What did survive is a miracle at best.
All that to say that the DaVinci code was fictitious, but I do believe there is a lot we don't know about and until we do know, we don't need to go spouting off about it. That is arrogant.