Google Adsense plugin does not show up under your existing plugins, it adds a whole new menu section, "BWS plugins". BWS plugins apparently can't be removed through the plugin settings area. GREAT!
The plugin itself doesn't appear to work at all with wordpress 3.8. The ad preview doesn't load and there are multiple input fields that simply don't load. There's also a gigantic textarea that is displayed at the bottom of the plugin settings page, pretty neat but I've got no idea what it's supposed to do.
Would strongly discourage anyone from using this or any BWS software.