‘NovellGroupWareAdmin’ is a service of the Windows 32-bit GroupWise client. I assume you are running the GroupWise Windows client in a native windows session, and Linux on the server?
Assuming so, the problem is due to an incomplete GroupWise client installation. If the NovellGroupWareAdmin object is not registered, the solution cannot create it and hence the message you describe appears.
We have seen this happen when people use incomplete ZEN snapshots to install the client, or have re-packged the installation. I have also seen this happen when the local configuration does not provide the required access to the Windows registry so that object registration entries can be created.