V-79-57344-65033 - Directory not found. Cannot backup directory

Good Morning,

We are using Symantec Backup Exec version 14.0 Rev. 1798 to backup our main file server. In the past, the backup completed without issue, but now it works for the first ~95% and then fails on the last three folders, starting with the following error:

Access denied to file XXX\output\t155\media\graphics\t155_p238_base.jpg.

Error reading security data stream.

Unable to open the item XXX\output\t155\media\graphics\t155_p238_c1.png - skipped.

Directory XXX\output\t155\media\graphics\ was not found, or could not be accessed.

None of the files or subdirectories contained within will be backed up.

V-79-57344-33967 - The directory or file was not found, or could not be accessed.

V-79-57344-65033 - Directory not found. Cannot backup directory XXX\output\t155\media\misc and its subdirectories.

V-79-57344-65033 - Directory not found. Cannot backup directory [x1000]

Needless to say the files are there and BackExec has permssion to access them.