Many times a user will have a http/s proxy set in their bash ENV and when wget runs for Candlepin to check the services the installer will bomb out. Please add a check to make the installer let a person know there is a proxy set before running and resulting in a error.
Moving to POST since upstream bug http://projects.theforeman.org/issues/14956 has been closed
*** This bug has been marked as a duplicate of bug 1341713 ***