Workgroup Manager error adding folder to Dock

[GoldenWonder]

On our 10.9.4 OSX server we use Workgroup Manager to deploy preferences. One requirement is a few shortcuts to various folders in the dock.

 

This works fine, but only for up to 3 items, whenever I try to add the fourth item I get the error:

 

"Error wile saving record "

Connection failed to the directory server

(com.apple.OpenDirectory:2100)

 

Out of the 4 links, 3 are to NAS boxes and 1 to a windows server. It doesn't matter what order you try and add them - but when you add the fourth you get the error!

 

I've searched for this problem, but I seem to be alone in this one