Basic Replication trouble.

I'm trying to run a simple update script on this database which is
created from a replication agent. Several individual databases are
replicated into one consolidated. I've not worked with replication
before and I was hoping someone could tell me what this error means.

UPDATE
CUSTOMER
SET
[TIMESTAMP]='20060920090453'
[IVBTYPE]='M '
WHERE
[ROWID]='9f83bc89-76f8-4140-a0cc-58fa34962638'

yields:

Server: Msg 208, Level 16, State 1, Procedure
upd_0119B5A9AA624A55AF1B73F2E32A7A0C, Line 14
Invalid object name 'dbo.sysmergearticles'.

Do I have to do something to the database before trying to update it?P.S. I notice I'm missing a comma in there after the first set, missed
it while I was copying it over and didn't notice until I posted.