I wondered if this was possibly related.
I'm moving this thread over to our download/installation forum.
For general Creative Cloud Membership questions, here is the FAQ link:
It did take my some time but I did found the cause of the noted issue.
When you have a system date before the 1st of april 2012 the AAM gives the error: Download error. Press Retry to try again or contact customer suppoert (12175)
So please add to the bug database the rare issue, and maybe ask people to check the system time to be in sync. Thanks for the other suggestions!
A more readable error for 12175 would also be a great help.