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
I installed Sony reader (I preferred not to but I hoped it would help). The Sony PRS-T2 doesn't show up in the library of ADE 2.0.
I guess I have to try ADE 1.7.2
I'll report back after I've tried.