I think you may have hit the nail on the head John.
I recently ran out of space on my first NAS and had to buy a second one. Mapping the first NAS to a drive letter had been relatively painless - I'm not a computer guy but was able to do a search on how to do it and it was quite simple and straightforward, even for me. The second NAS however, was a real pain. It just wouldn't work the way that the first one had. I putzed around for over an hour trying this and that, all to no avail. Finally I got a connection, don't ask me how. My brain was totally frazzled at that point and I don't even remember what I did to get the connection finally - but, and probably a very important point, I got a network address to connect to and not a drive letter. I was just so thankful to finally get a connection it never occurred to me that this may end up being problematic.
I can't follow your suggestion for a few hours because I have a large copy job running at the moment, but when it's done I'll try it. Any suggestions about getting a drive letter for this thing because the usual route just didn't work for some reason. Do I have to disconnect from the network address first? If so, what's the dummies version of doing that? Thanks so much.