Could not connect to the network

I was having some trouble downloading books onto my nook. The error message I received each time I tried to download a book was that it could not connect to the network. That didn't make sense to me since I had been browsing the network to find the books that I wanted to buy/download. I was trying to download some free books from Google and I wondered if it was because the books were from Google and possibly on a different network that wasn't accessible for some reason.

I became interested in the book upon which a recent movie was based and decided to download a sample. It told me that it would be downloaded momentarily so I went to check my B&N Documents and discovered it had not been downloaded. I clicked the download now button and it informed me that it could complete the download because I did not have a default address set in my account. I went to my account on the B&N website and set my default address. I was then able to download my sample. I then tried to download some free eBooks from Google and was successful again. It seems that if you don't have a default address set you can't buy books, download free books or get free samples.