I just read another thread recommending not to ever throw away the original DVD for the sat nav as it has special install files. I have a Tribeca. Unfortunately I did not know this and the burnt disc was working fine until I disconnected the battery for maintenance reasons a month or two ago. Really wishing I hadn't. Does this mean I will not be able to get the sat nav working again? Its giving me the message "insert proper disk" from memory. I'm unsure that me parting with $300 to whereis will fix the issue.