Has anybody had this problem. The map screen on my 2012 Columbus has frozen on the location from where it starts up. I have rebooted the system several times. The guidance and voice control seem unaffected as well as the maxidot display. Has anybody suffered this or resolved this issue. Thanks in advance.

There's a fairly long post in here from a few months ago on the same issue, might offer some advice:

http://www.briskoda.net/forums/index.php?/topic/292930-Urgent-ish-help-required-wifey-and-sat-nav-in-trouble-!

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Many thanks for that a quick read and a few prods put me in the right direction.