When I upgraded, wayfinder re-registered no problem. Howver, recently I downloaded and paid for a months license for the West USA maps, when I came to reselect the Uk, the license code was no longer valid. It appears that Wayfinder will only hold one license key at at time. Must remember to make a note of the new one. I contacted the Wayfinder UK help desk and I must say I got excellent support, it did take a couple of weeks, but they have issued me with a new code. Try the help lines, all I needed to quote was the MAC addreess for my tablet.