When using the AddProxy utility on a users workstation (Running Groupwise 5.5) the following error is displayed in the AddProxyErr.csv file
ERROR: [7824-105-43-00000000] Unable to open GroupWise system address book
This can be caused if there is an issue with the Groupwise client. To check, open Groupwise and attempt to open the addressbook, if nothing is visible then this indicates an issue with the client. Please note that the addressbook may be viewable when writing a new email but this is not the same way that the AddProxy utility accesses the addressbook.
Re-install the Groupwise Client and verify that the addressbook is viewable.