I downloaded the files, but I can't find a way to install them. Here are the files and folders I find in TOPO Deutschland 2012 Pro.gmap:
Additions\
MDRMAP\
Product1\
I0000954.TYP
Info.xml
Info_v2.xml
product.mdx
Follow the above advice and read also [Only registered and activated users can see links. ]
Bookmarks