hi, know this cheeky but wondering if you can help, my firm just purchased above truck but without the sd card for nav, i googled and got from ebay iGo Primo 2.4 wince trucks latest maps version on 8gb sd card. When put into sd slot it plays as media 105 tracks, including speed camera signs etc, but won't recognise sd card in when choose sat nav option. it stays greyed out and says insert an sd card.

do you have any ideas what i could have done wrong ?