NAS drive suddenly won't share on Mac OS X Mountain Lion network

I have several drives that I share via Mac OS X Server (recently upgraded to 2.2). All the machines are on Mountail Lion.
One of those, a backup drive (with CCC) seems not to share all of a sudden. It can be see on the local desktop. It started when the drive filled up. I looked at the drive and deleted some folders, in a sparse package made by my backup program. After that I could not unmount the drive or share it any longer on the network. I have four other drives that share, mount, dismount just fine. Not this partition. I should mention that three other partitions of the drive also cannot be seen on the network but show up on the local desktop, while the other drives can be. The unshared partitions do however appear on the server and I have examine them there. Nothing evident.
Any advice on how to proceed?
Henry

It turns out, for some reason, with extra networking interfaces set up, it wasn't able to connect to the server, which is why it kept waiting at that stage.
Once I deleted the extra interfaces, it worked without a problem. (I figured it had to be some kind of networking or communications issue - since it was after the network screen. Also, if the location were the problem for execution, it should have had problems just starting up.)
I tried to move icons to the dock - as in move them from a folder so they were not shortcuts, but that the location was on the dock. It just wouldn't do that at all - it always copied the icon to the dock and the original was still in place.

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<Edited By Host>

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