The reason why you keep getting signing failures even with a fresh project is that you already did it once. ie, in your config.xml, the widget version is set to "1.0.0.0" and the name attribute is "cordovaExample". So the first time should work, but every new fresh project there after will have the same values.
I would recommend updating the version number every time you deploy and not worry about that debug-token business - I've never used it. -- Timothy Kim
