Judging by reviews, I'm afraid that device may not support DRM eBooks.
(search for 'Most Ebooks Can't Be Read On This - Important Info')
It is not on Adobe's list of supported devices. http://blogs.adobe.com/digitalpublishing/supported-devices
It is on Overdrive's (DRM library books) list of explicitly unsupported devices http://www.overdrive.com/resources/drc/incompatibledevices.aspx
One Q&A does suggest it can read DRM library books: http://answers.walmart.com/answers/1336/product/21635127/questions.htm?expandquestion=9390 16 top question
but doesn't give any hint as to how.
It may be worth uninstalling ADE 2.0 and trying v1.7.2 instead.
A few of us have found devices that work with 1.7.2 but NOT properly with 2.0.
However, as the 106 isn't on the Adobe list, I wouldn't hold out too much hope that 1.7.2 will solve your problem.
Version 1.7.2 is a little difficult to find, I found it for PC at http://www.tucows.com/preview/853736/Adobe-Digital-Edition-For-EBooks
If you have non-DRM books you want to transfer, you could try the Calibre software. http://calibre-ebook.com/
I can't promise that will work, but it stands a good chance.
I find it more convenient than ADE for non-DRM eBooks.
(Sadly Calibre isn't all it says on the Home Page: 'Calibre is the one-stop solution to all your eBook needs', as it doesn't handle DRM eBooks at all.)