Network share backup fails with a 'Unable to initialize path to selected item' error message. (4037868)

Network share backup fails with a 'Unable to initialize path to selected item' error message.

NetVault Environment Details...

NetVault Backup: 8.6.3
Network Share Device: NAS

The Binary log had the folloiwng messages and errors:

1] Job Message   2014/01/29 11:26:15   375   Media   WOLINFL003   (Superloader3h) Media in 'DRIVE 1:WOLINFL003' assigned to job ready for data transfer
2] Information   2014/01/29 11:26:15   375   Data Plugin   WOLINFL003   Connecting to Network Share: \\WOLNAS02\BkupExecB2d01
3] Warning   2014/01/29 11:26:15   375   Data Plugin   WOLINFL003   Unable to initialize path to selected item 'B2D1' - won't back up this item or its children
4] Job Message   2014/01/29 11:26:54   375   Data Plugin   WOLINFL003   Job completed with warnings/errors

NetVault Server File System Plugin Trace had the following messages and errors:

2   HBUTIL   ???   7852   56   0   112525583973   Converting selection tree item 'Network Shares' type 1004015
2   HBUTIL   ???   7852   56   0   112525583973   Converting selection tree item '\\WOLNAS02\BkupExecB2d01\' type 1004004
2   HBUTIL   ???   7852   56   0   112525583973   Converting selection tree item 'B2D1' type 1004001
2   HBUTIL   ???   7852   61   0   112525724365   Found start of new selection set at 'B2D1'
2   HBUTIL   ???   7852   12   0   112525724365   SELECTION SET:
2   HBUTIL   ???   7852   13   0   112525724365   Component = 'B2D1'
2   HBUTIL   ???   7852   14   0   112525724365   Depth     = '2'
2   HBUTIL   ???   7852   11   0   112525724365   Parent: '\\WOLNAS02\BkupExecB2d01\'
2   HBUTIL   ???   7852   16   0   112525724365   Restore Name = 'B2D1'
0   DYNLIB   ???   7852   10   0   112525739963   Error obtaining function address: The specified procedure could not be found.
0   FSWINUTL   ???   7852   90   0   112615438378   Failed to get information for filesystem '\\WOLNAS02\BkupExecB2d01\' : 'The process cannot access the file because it is being used by another process. '

‘B2D1' is a folder on a Network Share: \\WOLNAS02\BkupExecB2d01 (NAS) that has been selected for the backup.

These are the problem error messages:

a] Unable to initialize path to selected item 'B2D1' - won't back up this item or its children
b] The process cannot access the file because it is being used by another process.

Creating a new network share in the Filesystem Plugin backup also resulted in the same issue.
This confirms that there is a problem connecting to the ‘B2D1' folder on the \\WOLNAS02\BkupExecB2d01 path.