Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 


[InvalidOperationException: Instance failure.]
   System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boolean& failoverDemandDone, String host, String failoverPartner, String protocol, SqlInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean aliasLookup) +1612
   System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +1083
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +272
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +687
   System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +82
   System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +558
   System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +126
   System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +651
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +160
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +122
   System.Data.SqlClient.SqlConnection.Open() +229
   System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) +49
   System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +162
   System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +308
   System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +152
   System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +2870
   System.Web.UI.WebControls.Repeater.GetData() +57
   System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +292
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +71
   System.Web.UI.WebControls.Repeater.DataBind() +85
   System.Web.UI.WebControls.Repeater.EnsureDataBound() +83
   System.Web.UI.WebControls.Repeater.OnPreRender(EventArgs e) +27
   System.Web.UI.Control.PreRenderRecursiveInternal() +148
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Control.PreRenderRecursiveInternal() +233
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4437