I bought an e-book from https://www.casadellibro.com and tried to download it from my CasaDelLibro library, by clicking the button redirecting to
http://acs.tagusbooks.com/fulfillment/URLLink.acsm?action=enterorder&ordersource=TagusBook s&orderid=G230S8vLegs6lfHuM1487007384477&resid=urn%3Auuid%3A12eb9daf-4759-4631-b21e-e4d1f8 102389&rights=%24default%24&gbauthdate=02%2F13%2F2017+06%3A36+CET&dateval=1487007404&gblve r=4&auth=8e0316bde491041134a4b7d9907386bbb264c1d0
This downloads to my computer a short file named URLLink-2.acsm. When I try to open it with Adobe Digital Editions, I get an error:
Unable to download. Error getting License. License Server Communication Problem: E_ADEPT_NO_TOKEN
My computer is a iMac, macOS Sierra 10.12.3. Adobe Digital Editions is version 4.5. The computer is authorised with my Adobe Id.
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