Hi there. I noticed that you were able to successuffly make a copy of a Navteq DVD. I am having no luck. I own the Chyrsler RB1 nav unit (not the larger screen REC unt). I am trying to burn a copy of the 05064033AE nav DVD onto a DVD +R DL Verbatim disc, but the RB1 nav unit gives me a disc error when I instert the copy. Do you own the RB1 nav unit as well? What tip might you have for me? Did you use a DVD -R DL? Thanks so much.