One reason can be a corrupt .acsm file. Try redownloading the .acsm file if possible.
There are lots of bugs in ADE V2.0, though I hadn't seen this one before.
Try using v1.7.2 instead and see if that helps.
Version 1.7.2, it is a little difficult to find, available on Adobe site for Windows and for Mac.
The forum software is sometimes corrupting the link above. There shouldn't be a blank in 'editio ns.html'. The following redirects to the same page: http://tinyurl.com/diged172
Thanks for the suggestion, but no success - i'm guessing it's due to system restrictions at work.
I had redownloaded the .acsm file a ridiculous amount of times yesterday - i felt like my whole afternoon was a freakish deja vu loop!
I installed 1.7.2 today and attempted the download - now i get a new error message, lucky me
Microsoft Outlook 2007 Programming: Jumpstart for Power Users and Administrators:
IO Error on Network Request.
Please check your network connection and try again.
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Annoyingly - I downloaded it at home last night using Adobe Digital Editions 2.0.67532 in about a minute. I put it in dropbox hoping i could access it today from work but to no avail thanks to security. I guess I'm just not meant to tackle this task today! Think I'll bring my laptop into the office next week and print the damn thing and be done with it.