Hold down the 3 and the 2 on your keyboard when you reboot. This will put you into 32 bit mode. Reader Library should then recognize the Sony. Unplug any other USB devices you may have on the Mac as well.
After you have everything working, download
Calibre and use that
instead of Reader Library. Then you won't have to mess with Reader Library, and you'll have much better software to catalog your ebooks.