Putting the plugin on my wordpress site and adding the widget to a sidebar, I get no map displayed. Looking at the code within the widget, the call below is made:
Which returns 'Bad Request' instead of a map (I presume).
Also in the settings page, I can set the map colour and style OK, but the large section above it is blank and reads
"Could not retrieve info from PulseMaps server. Please try again later."
WordPress v3.3.1 (multisite)
PulseMaps v1.4.6 (network enabled)