The message you are seeing is accurate.  IE is required to perform that operation as well as other driver related processes.  As IE has been deprecated, we use a new tool called iPrintManage that is included with later versions of the iPrint client.  If you right click the iPrint Client icon in the systray, there is an option called Manage.  Selecting that option will present a login screen and you'll use your eDir admin credentials to log in.  From there you should be able to complete your task.  You can also create a shortcut using C:\Program Files\Novell\iPrint\iPrintManage.exe.

Thank you,

the "Copy to" option displays an empty screen, where this should (i presume) provide a list of Store, right ?

You should see a list of all Print Managers that exist in the eDirectory tree.  The management utility knows how to determine the associated driver store.  One thing that is not clear and not documented is the utility's ability to copy PDPs from one iPrint appliance to another.  This is something the utility cannot do. 

OK, what if I do not see them ?

Will you share the C:\NDPS\Users\<yourusername>\iPrintManage.exe\iPrintManage.log?

Indeed I see the following in the log :

- iPrintServer::Initialize(): Couldn't get PSM list from LDAP. Continuing with Local PSM only
- iPrintServer::Initialize(): Local PSM details - psmInfo.PsmName: PrintManager.OU
- iPrintServer::Initialize(): Local psm running. psm.PsmHostAddress: iprnt01.secu.lu, psm.PsmName: PrintManager.OU, psm.PsmIDS:
- iPrintServer::Initialize(): psm.PsmName: PrintManager.OU
- iPrintServer::Initialize(): local psm set. _printManager.IDSObjectName: DriverStore.OU
 Logger Started...
- ApplicationController initialized...
 - AdminLogin() : Login Failed. User: cn=admin,o=@SERVER. Error :IncompatibleServer
 - AdminLogin() : Login Failed. User: cn=admin,o=@SERVER. Error :IncompatibleServer
 - AdminLogin() : Login Failed. User: cn=admin,o=@SERVER. Error :IncompatibleServer