Fatal Error idsite=all on realtime map widget (2 replies)

Hi, I get a:
Fatal error: Cannot use string offset as an array in <b>/analytics/plugins/UserCountryMap/Controller.php on line 175

When calling:
/analytics/index.php?module=Widgetize&action=iframe&widget=1&moduleToWidgetize=UserCountryMap&actionToWidgetize=realtimeMap&idSite=all&period=day&date=2013-05-06

Same when calling multiple sites with idSite=10,18 etc

Is there a way to show all sites or a selection of sites on the realtime visitor map?

Thanks