Decked Builder v1.36 is live for PC, and with it, a number of different fixes including Pauper in Collection stats.
If you are having an exception when attempting to update, uninstall and reinstall. We had a problem in our updater for a build and the fix is to revert to 1.25 (the installer from our website).
Decked Builder is unofficial and is not affiliated with, endorsed, sponsored, or approved by Wizards of the Coast. Magic: The Gathering is a trademark of Wizards of the Coast LLC.