Boy, I can't say anything right with you, can I?
All I said was that I checked it from my Windows partition. This was to verify that things were working and that the problem was particular to my Ubuntu partition on the laptop. I have now confirmed that it can be accessed remotely without permission issues from Windows, and I've confirmed that the library permissions on the Ubuntu server were also set correctly.
All I'm trying to figure out is why only just recently, something that was working stopped working and how I can work around it, if possible. Part of the process for troubleshooting anything is to verify that you are, in fact, dealing with one problem and not several.