Adobe Digital Editions

Hi Guys,

I'm trying to transfer my E-library from Sainsbury's Entertainment to Adobe Digital Editions so that i can then move it to an SD card and then to a Nook e-reader, but I keep getting the 'Check Authorisation' message. I've done this and everything seems fine. All this performance is needed because Nook have withdrawn support for their E-readers in the U.K. so I have no way to register it.

Thanks.