I have the unlocked mapsets: Sub Sahara Africa 2012, SA Topgraphic 2010 and t4A downloaded and installed in the newest release from Basecamp all the maps show up in the manage map products and is unlocked.

I have an etrex20 with the maps set on the unit and is fully fuctional.
the problem is....
I have a nuvi200 and want to install the streetmap to this unit, but when I select the option to install the specific mapset to the unit none of the maps appear in the window,,it say's that there are no unlocked maps available to be installed...

How do I install the streetmap to the uniit?