Same here, no 3d buildings with CNEU 2012.10 unicode in sw 2.30 and no DEM- They show in map list but not on map-
I tried copying 3d buildings img either in .System or in Garmin in sd.
CX too acting strange with an european 2011.10 map.
3790 US sw 4.10 flashed to SG/MAY 2.30 ,resetted before and after flashing