[Plugin: Easy iFrame Loader] buy_amazon shortcode not working for me

It’s probably me because this is the first time I’ve worked with iframes, but I followed the example exactly for placing an Amazon product link in the iframe and all I get when I display the page is the actual code. Here is basically what I have: [buy_amazon src=”http://rcm.amazon.com/e/cm?t=i0xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”%5D

I left out all the style info, etc. and just the actual URL. What am I doing wrong? Thanks.

http://wordpress.org/extend/plugins/easy-iframe-loader/