Admin Process: Received the following error performing a Monitor Roaming User's Replica Stubs

Hi guys

i have a couple of people that are getting this error in the logs:

Admin Process: Received the following error performing a Monitor Roaming User’s Replica Stubs request on

The replica of the database roaming<user>\bookmark.nsf has not been initialized by the replicator

Any help would be greatly appreciated

Subject: Admin Process: Received the following error performing a Monitor Roaming User’s Replica Stubs…

You have a replica stub on the server. Make sure that the user’s replicator page is set up to replicate bookmark.nsf on a regular schedule.