Having troubles with log services

Having troubles with log services

  
I am using Platform Server 6 Comunity Edition, SQL Server Express 2005 and having this error:

Initialization error: System.Data.SqlClient.SqlException: Cannot insert duplicate key row in object 'dbo.ossys_parameter' with unique index 'OSIDX_OSSYS_PARAMETER_4NAME_11HOST_SERIAL'.
The statement has been terminated.
   at OutSystems.HubEdition.RuntimePlatform.DBHelper.#Dbb(DbException e, IDbConnection conn)
   at OutSystems.HubEdition.RuntimePlatform.DBHelper.ExecuteNonQueryDontCleanParameters(IDbCommand cmd, String description, Boolean isApplication, Boolean skipLog)
   at OutSystems.HubEdition.RuntimePlatform.Settings.#keb(IDbTransaction tran, String previousSerial, String currentSerial)
   at OutSystems.HubEdition.RuntimePlatform.Settings.UpdateSettings(Func`1 serialNumberGetter, Boolean skipConnectionStringCheck)
   at #dFd.#lFd.#0jd()
   at #dFd.#lFd.#2jd(Object o)

Non of the Outsystems Services are up and running. can someone help me?