I am new to this...I have a question: I purchased a 2011 E-Class Cabrio in Germany from the factory in Stuggart. It is American Specs and came pre-loaded with all the European Maps and in English. I am now relocated to Panama City, FL and when I picked up the vehicle and went to the dealership in Atlanta, they ordered me the new DVD and had it shipped to me...I tried to follow the directions and run it but the system does not recognize the version. Would I need to take this in to the nearest dealership or is there some "hidden" menu I would need to access to get it to work? Thank you in advance!