I have upgraded a MSDE 1 database to MSDE SP3A. The system in question currently connects remotely to a SQL Server 7 server (this is being upgraded to SQL Server 2005 in the near future) The upgrade appears to work but once the application starts we get the following error messge when one of the local processes is tryng to write to a table in the database. [Source : Microsoft OLE DB Provider for ODBC Drivers] [Description : [Microsoft][ODBC SQL Server Driver][SQL Server]INITCOLVS: The parameter 'nickname' is invalid.] Previoulsy SQL Merge replication had been used t o send certain data from the client to the server however I believe this was removed at some point. Could this be the cause of the problem. Any suggestions on how we can solve this.