Weird issue

[psyxologos]

Hallo All I. I was wondering if you could help me find a solution to an issue that arose today. *My sat nav kept restarting this morning, and going blank. After removing the key from the ignition and re-trying, i got a menu very much somilar to the one i am used to, with the difference that now the menue was pale blue with navy blue text (it looked 'retro' and factory standard), and the sat nav option was missing. After removing the maps disk and the key from the ignition and re-inserting etc the issue momentarily was solved. But it only lasted a couple of minutes, i was back to the restarts and the menu without the sat nav option. That happened in the BMW so I left it and took the mini to work. Well, after ten minutes it did the same. After despairing and stopping at a service station trying different stuff, I -amongst other thongs- took the cd that I was playing out of the player and that seems to have sorted it out... It has behaved so far, but I Am now away on a conference with the mini and thus have not tried the BMW to see if it works now. Any thoughts on what might be going on?*

Ps1: *In both cases, it was the same music CD I had in the player, so it might not like it. I do not know...

Ps2: both cars are on the 'night mode' OS.*