Worked for me yesterday Ted. I only use mapupdater though, not Garmin Express. I'm sure Express is ok too, but I know that mapupdater works every time for me. Takes about 3 hours on my not-high-speed BB connection. I know some people do experience issues updating their maps, but to be fair to Garmin I find it a simple process and I've had a Z660 since it first came out.
FWIW I did have one minor delay this time around which I haven't seen before, but I wouldn't call it a real problem as I fixed it in seconds.
For quite a while now the map files have had to go to the unit's SD card as the main unit doesn't have enough storage due to map files getting larger and larger. On this particular occasion all of the possible map areas in the installation selection pane in mapupdater were highlighted in red text with a message that the unit doesn't have enough storage and I couldn't get past that. I backed out of the installation, deleted the Garmin folder on the SD card and tried again and voila, full European maps easily installed.