I'm getting similar error to what I saw with the previous beta:

"Cannot update the maps application.
Update failed. (106)
Please close all applications on your phone and run Nokia Maps Updater again."

Error on phone says "Unable to install. Component built in"

Nokia 6220 classic, firmware 3.46

Unlike the previous beta the updater doesn't try again with a partial update (PU) sis file, although that also used to fail!

shame...