Visitor countries (world map) problem... error while loading

Hi guys,

Suddenly in place of world map visitors plugin i can see that message:
error while loading data (Markup in doucment not well-formed). What does it mean in fact, any idea?


We need YOUR help! We are running a crowd funding campaign to raise funds to implement the detailed Visitors Maps of Countries, Regions and Cities (for all countries)!

These maps will be beautiful, usable, and built using open standards SVG+JS. They will show detailed visitor count, conversion rates, by Country but also (New!) by city and region.

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