Custom backgrounds do not show up on individual award/achievement pages. I am using the Background Manager plugin (http://wordpress.org/plugins/background-manager/). The background loads for a few seconds then it disappears. Maybe it's conflicting with the Achievements' styling. Any thoughts?
I am also contacting the Background Manager author as well. Thank you so much for making this awesome plugin few of charge, Paul. You're a pretty gnarly dude for that!