There's a temporary fix to get GME back, have a read of the last few posts in http://forums.Groundspeak.com/GC/index.php?showtopic=291102&st=700
and JRI, the developer is hoping to fix it properly tonight
For anyone else who's thrown into turmoil by the latest mapping changes I can thoroughly recommend the GME Greasemonkey addon - available here http://geo.inge.org.uk/gme.htm
yes i did see this and it does work but i did have to update my gme first