I am using Base Camp 3.2.2 under OS 10.5.8 on an Intel 2009 dual core MacPro. Under the Maps menu Base Camp shows that the following maps are installed:
Topo US 2008
Topo US 24K West
City Navigator North America NT 2008
City Navigator North America NT 2009
No matter which map I select, the display remains essentially unchanged, showing "basic map only." No contours show up in the display, no labeled streets, etc. (And I do have contours selected to be shown under preferences). This has been a problem for me with all Mac versions of Base Camp. If I boot into Windows 7, the Windows version of Base Camp displays all the maps just fine. Also Road Trip shows the maps correctly on the Mac.
I'd be very grateful for some help in getting the Mac Base Camp to display the maps.