Unable to download BN Content

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I am rooted and twice now have found that I cannot download Barnes & Noble content all of a sudden. Everything worked fine for a week and now it's happened again. I can fix it by rerooting. I was just wondering if anyone else has had this problem after rooting? Here's the message I get when I try to down BN books, mags:
Unable to download
Internal error: Exception executing the command

Anyone have any ideas what is happenig here?

Confirming my experience

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I had been using rooted stock 1.4 (Indirect) for about 2 months and never had a problem downloading content. I would guess that I downloaded about 3 books and sideloaded 2 books in that time.

Ed