Ok, your problem ist either you have written the dvd with a wrong program.
For the best result burn on a dvd-r DL, i use verbatim dvd´s and they work exellent, be sure to have - dvd´s not plus.
What you can try is a full factory reset, it works mast times, if not than try to do a rewrite of your dvd.
What i also find out is that your laser unit has to be cleaned, i had the same problem with a friends avic, afther cleaning the laser it worked well.
a complete factory reset works like this ;
Remove disk
Hold reset and eject
Release reset but hold eject
Screen will go bac
