My Adobe Digital Editions will not let me authorize my Nook????? WHY?!
Is ADE seeing your Nook? (eg showing in left side pane of ADE)
The Nook may have got half-authorised.
Try to clear any old Nook authorization with Nook plugged in and ctrl-shift-E to ADE in Library view (cmd-shift-E on Mac).
Restart ADE and try again to authorize the Nook.
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