Windows Phone 8 Stack Trace

Hi I got the following stack trace from one of my windows phone 8 applications which was called from the background agent called ScheduledTaskAgent1 while call a routine UpdateUI() from what I can gather:

Frame    Image                                   Function                                                                                                                   Offset        
0        Microsoft.Phone.Data.Internal.ni.dll    System.Data.SqlServerCe.SqlCeConnection.Open                                                                               0x00000534    
1        Microsoft.Phone.Data.Internal.ni.dll    System.Data.SqlServerCe.SqlCeConnection.Open                                                                               0x00000006    
2        System.Data.Linq.ni.dll                 System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection                                                              0x0000008c    
3        System.Data.Linq.ni.dll                 System.Data.Linq.SqlClient.SqlProvider.Execute                                                                             0x00000038    
4        System.Data.Linq.ni.dll                 System.Data.Linq.SqlClient.SqlProvider.ExecuteAll                                                                          0x00000080    
5        System.Data.Linq.ni.dll                 System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute                                         0x0000026c    
6        System.Data.Linq.ni.dll                 System.Data.Linq.DataQuery_1[[System.__Canon,_mscorlib]].System.Linq.IQueryProvider.Execute[[System.__Canon,_mscorlib]]    0x00000040    
7        System.Core.ni.dll                      System.Linq.Queryable.FirstOrDefault[[System.__Canon,_mscorlib]]                                                           0x00000106    
8        ScheduledTaskAgent1.ni.DLL              ScheduledTaskAgent1.ScheduledAgent.UpdateUI                                                                                0x0000020a    
9        ScheduledTaskAgent1.ni.DLL              ScheduledTaskAgent1.ScheduledAgent.OnInvoke                                                                                0x00000078    
10       Microsoft.Phone.ni.dll                  Microsoft.Phone.Scheduler.ScheduledTaskAgent.Invoke                                                                        0x00000432    
11       Microsoft.Phone.ni.dll                  Microsoft.Phone.BackgroundAgentDispatcher+AgentRequest.Invoke                                                              0x00000344    
12       Microsoft.Phone.ni.dll                  Microsoft.Phone.BackgroundAgentDispatcher.InvocationThread                                                                 0x00000080    
13       mscorlib.ni.dll                         System.Threading.ThreadHelper.ThreadStart_Context                                                                          0x0000008a    
14       mscorlib.ni.dll                         System.Threading.ExecutionContext.RunInternal                                                                              0x00000088    
15       mscorlib.ni.dll                         System.Threading.ExecutionContext.Run                                                                                      0x00000010    
16       mscorlib.ni.dll                         System.Threading.ExecutionContext.Run                                                                                      0x00000042    
17       mscorlib.ni.dll                         System.Threading.ThreadHelper.ThreadStart                                                                                  0x00000042

I am trying to understand what this means and the routine for UpdateUI() is as follows:

private void UpdateUI()
        {
            // all variables I have commented out

            // Get the database context
            using (db context = new db(ConnectionString))
            {
                try 
                {
                    strTest = (from c in context.Setting
                                   where c.Code == "TEST"
                                   select c.Value).FirstOrDefault();
                }
                   catch (Exception)
                   {
                          // Do nothing for now
                   }
            }
                // Get database context
                using (db context = new db(ConnectionString))
                {
                    try
                    {
                        My_template dbMy_template  = new My_template();
                        dbMy_template.myDate = System.DateTime.Now.ToString();
                        dbMy_template.myValue= myInt.ToString();
                        context.My_template.InsertOnSubmit(dbMy_template);
                        context.SubmitChanges();
                    }
                    catch (Exception ex)
                    {
                        // Do nothing for now
                    }
           }
        }

Thank you for all your help on this.