Wondering if anyone has seen the below error:

"Error:1456: The agent failed to read information from the eDirectory
Server. Verify that the workstation object is valid and the Middle Tier
server is up and running"

I'm getting this on workstations that aren't logged in (at the login
screen). If a user is logged in, no problems.

Client 4.9 SP2 (with update pack) Zen 6.5 management agent installed
(shipping version).

Any help appreciated