I would venture to bet its because this character of mine has no energy credits..
http://screenshot.xfire.com/s/124838382-4.jpg

Says I need to purchase something when the cost of that purchase is infact 0.


Got Energy Credits from a fleet member / friend. And guess what, I can now load that saved outfit and simlpy apply it without making a purchase.

-- Edit (because this is funny)

My friend had this to reply to the screenshot
"YOU'RE TOO POOR TO AFFORD FREE THINGS"