I've lost the high resolution map options for my installation eg. UK, individual european countries. Possibly happened while trying the 2.6 nightly build. Can somebody remind me how to instal the high resolution maps?
I'm not sure how you lost them but those maps are defined in a plugin. Go to the Tools->Plugin Manager menu and look at the Maps group. Install or reinstall if necessary.
We have recently made a change that moves your <home>/.metapps directory to <home>/.unidata/idv This is where plugins and other local state is stored. Have you noticed anything else missing? Preferences, favorite bundles, history, etc.?