1. To confirm Adobe Digital Editions is authorized properly, take the following steps.
2. Reset the ADE folder on the nook:
3. Open Adobe Digital Editions. You should see the Device Setup Assistance dialog. Click the Authorize Device button.
Once you have completed the steps above, please transfer the title again by dragging and dropping it on the device icon in the library view of Adobe Digital Editions. The transferred Adobe eBook title will be located in the 'My Documents' section on the Nook. If you are using a NOOKColor, transferred titles will be located in the 'My Files > Digital Editions' section.
Hope this helps,