I have exactly the same problem! Rented a book this weekend, cannot read it on my Sony PRS 600..... HELP! Also booted in XP, but same problem there (on 2 different macs, one pc)
ADE 1.7.1 has not been updated for compatibility with the Sony Readers on the Mac. Use the Sony Ebook Library Software (3.0) instead.
According to the Adobe website ADE 1.7.1 is compatible with Mac if you
look at system requirements and with the Sony reader if you look at
supported devices. Though it doesn't mention Macs latest O/S.
and if I download an Adobe digital editions book, can I then move it
to Sony's ebook software, or is the format unsupported on the Sony
I am having exactly the same problem. Is there a resolution to this? I have snow leopard, I have a prs-600, and ADE 1.7.1 and it will not recognize my reader