An example how to quickly build the HTML Widget and integrate Widget's code with HTML JavaScript. Good starting point for building more advanced geo-applications.
WebBrowser4Widgets library, at startup, is looking for first visible Widget window to bind control (screen position and window level) to WebBrowser window.
" cannot connect to widget " means - the search failed.
Yahoo! Widgets 4.0 introduced 'hidden' state for Widget. Check this and eventually restart Widget.