I have just updated from BaseCamp 4.0.1 to 4.0.2 and lost all access to my original MapSource maps. The maps worked correctly up to and including v4.0.1 od BaseCamp. All I can see now is the Global Map.
In the Map Product Manager Unlock Regions tab both City Navigator 4 and 5 are listed as "Map Product Not Installed" even though they are installed on the machine.
Selecting the Add button and entering the unlock code makes no difference. These map products were previously unlocked and worked perfectly OK in both MapSource and BaseCamp. Now the maps are not even accessible through the original MapSource software either!!!!!! What are you playing at Garmin??? Another broken application.