Just had another monumental battle adding the location; the full error message is "Public location missing location coordinates", which appears under the map. Above the map a tick box labelled "Public location" appears. I got around the problem by switching to IE and saving the location somewhere vaguely correct. Then I switched back to Firefox to home in on the exact location.
I have all sorts of weird problems in Firefox adding the location (some issue regarding "public place", whatever that means), and in IE I just get endless, frequent error reports asking me if I want to debug the web page (though that applies to more than just location adding).
Ian Rawes
British Library