Just fixing some of the pesky bugs that surfaced since the release of 2.0.0 Fix xf_xr_pm_product doesn't exist error after uninstalling the add-on and removing payment profiles. Ensure category permissions are rebuilt after a new category is created. Remove code pointing to a method that no longer exists. Display a more sane error when a product has no valid versions to download. Display session activity when viewing products. Ensure the ability to stop emails works correctly
