well i ungrounded the unit while installing guages and after i ungrounded it, next start up it said "reading disk" and then Please insert appropriate disk. i put both my nav disks in and it had the same outcome, i can still listen to my ipod if i switch modes but the normal screen wont change.. any ideas

I have the same problem... i move the GPS antena in the car and next was that: please eject and insert apropiate cd. I insert the other one and said: reading disc.......... please eject and insert apropiate cd....

Any clue please help wilb be extremelly appreciate!!!!