trouble to download ebooks

[michaell26599701]

the acsm files I downloaded do not work. the content of the files is:

<error xmlns="http://ns.adobe.com/adept" data="E_URLLINK_PARAMETER_SYNTAX rights lrt http://acs-p.ebrary.com/fulfillment/URLLink.acsm"/>

can you please tell me what is the reason? how to handle?

thanks.