Allow viewers to download file

Although I checked the box in the editor: "allow viewers to download file", the slide can ́t: "download is not available" I tried it several times, but It doesn ́t work.
Examples:
http://www.slideshare.net/martinagoeh...
http://www.slideshare.net/martinagoeh...
http://www.slideshare.net/martinagoeh...
 
sad I’m confused
Inappropriate?
4 people have this problem
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