PDS, check to make sure all three pieces of software and firmware are updated. No, I don't think you're an idiot. I only know that I downloaded and installed all three updates but then it didn't work and I eventually discovered that the firmware update did not actually install on the Reader for some reason and had to repeat it.
- On your Reader, go to Settings and then About. The current version of the firmware for the 505 is 1.1.00.18040.
- In eBook Library and with your 505 connected via USB click Help and then Check for Updates. The current version of eBook Library is 2.2.00.18100.
- In Adobe DE, click Library and then About Adobe Digital Editions. The current version is 1.5.791.
If those are all right, you should be able to follow Adobe's instructions here:
http://www.adobe.com/products/digita...er_sony_reader