Basic and Plus customers, please wait until April 18 2013 to upgrade to version 1.1.1.
If you are using Basic or Plus service level there you may experience some awkwardness in this update that will go away with the next update to our service. New Basic/Plus users should download version 1.1.0: http://downloads.wordpress.org/plugin/rpx.1.1.0.zip
Apologies for any inconveniences this may have caused.
NOTE: We strongly recommend first testing all plugin and WP core updates in a development environment, before making any updates to a production server.