ADE 4.5 Error Code When Authorizing Device

I was having trouble opening a downloaded ebook that I purchased, and had to de-authorized my device, then re-authorize.  I successfully de-authorized by following instructions from a previous forum post. Now I am getting the following error message when I try to open the ebook and re-authorize:

Activation Server error - Code E_ADEPT_REQUEST_EXPIRED

Digital Editions encouter an error on the activation server. 

Please help!