When restoring filesystem data to a different client, the target must be running version of NetVault that is the same or new to the one where the backup was taken. If the target version is older, the restore will fail with an error similar to:
Warning 2012/05/03 12:31:01 275 Data Plugin BACKUP 1 items and their contents could not be restored
Double click the message will show the following context:
C:\file.name : Unknown metadata header version - was the item backed up with a newer version of the plugin?
The NetVault version on the target client must be the same or newer than the NetVault version on the backup source.
Upgrade the version of NetVault on the target client to the same or newer than the NetVault version on the backup source.
Note that clients cannot be running a newer NetVault version than the NetVault Server.