Testing Google IAPs is a whole different animal Have a look at these knowledge documents from the Google Play Developer team, hopefully that will help:Testing In-app Billing | Android Developers & Set up alpha/beta tests - Developer Console Help .. and I'm sure more documentation can be found on the site.

Thanks, Bob. I tried both resetting the preferences, and uninstalling/reinstalling ID 2015. I still get either an "Exporting..." message, or just a pinwheel.