I just upgrade fom 4.4.1 to 04.05.01, but the UDT module stop working.

I got:

Error: User Defined Table is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) ---> System.Data.SqlClient.SqlException: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.SqlClient.SqlConnection.Open() at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.DiscoverSpParameterSet(SqlConnection connection, String spName, Boolean includeReturnValueParameter, Object[] parameterValues) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSetInternal(SqlConnection connection, String spName, Boolean includeReturnValueParameter) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSet(String connectionString, String spName, Boolean includeReturnValueParameter) at Microsoft.ApplicationBlocks.Data.SqlHelperParameterCache.GetSpParameterSet(String connectionString, String spName) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Modules.UserDefinedTable.SqlDataProvider.GetFields(Int32 ModuleId) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTableController.GetFieldsTable(Int32 ModuleId, Boolean AddNewColumn, Boolean AddTrackColumns) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTableController.GetDataSet(Int32 ModuleId, PortalModuleBase ParentModule, Boolean WithPreRenderedValues) at DotNetNuke.Modules.UserDefinedTable.UserDefinedTable.BindData() at DotNetNuke.Modules.UserDefinedTable.UserDefinedTable.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---

I have tried to uninstall and re-install the UDT module, but it does not work. Any ideas?

Thanks.

Jason Yao