mac to nook glowlite - no library books

[slush3]

I have a mac running OS X Yosemite and glow light Model BNRV350 ( a few years old).  Haven't been able to get library books onto the nook since end of July .  I had changed nothing.  There had been an update on ADE4.  But,  I've tried ADE 4,3 & 2, unregistering/reregistering and nothing works.  Does any one have a solution?

[Nanaky]

You get which error message?

[slush3]

Thanks for coming to my help. After 3 weeks of struggling, going to the library and B&N, and endless ‘googling it’, it started working today. I changed nothing. ADE is playing with us:-)

Thank you anyway.

[Nanaky]

Fine.