I first made the suggested change by @Robert Scheitlin to add one more color to the Foldable Theme. This was pretty straight forward. Our web pages are blue, but not the same shade. I've lost track of the thread where he suggested it ...
Next I started working through the sample exercise in the documentation on creating your own widget. Everything seems to be fine there. I copied it from the samplewidget folder into Widgets. It shows up just fine as a widget I can add. But once I do, it just sits there at a configuration window.
Is there something missing in the sample code instructions, or could there possibly be a conflict with the theme I created? I tried switching to another color, still in the Foldable Theme, but my widget still doesn't load properly. There are no errors in the console (I hate that!).