this is the ending of the stack trace:

System.Data.SqlClient.SqlConnection. (SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +1753346
   System.Data.SqlClient.SqlInternalConnection. (SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5295154
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +242
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1682
   System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +59
   System.Data.SqlClient.SqlDataReader.get_MetaData() +90
   System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +365
   System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) +1325
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +175
   System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +53
   System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +134
   System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41
   System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) +10
   System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +140
   System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +316
   System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) +88
   Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters) +140
   Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) +88
   Votations.NSurvey.SQLServerDAL.Voter.GetVotersTextEntries(Int32 surveyId, Int32 pageNumber, Int32 pageSize, DateTime startDate, DateTime endDate) +349
   Votations.NSurvey.WebAdmin.FieldReporting.BindData() +148
   Votations.NSurvey.WebAdmin.FieldReporting.Page_Load(Object sender, EventArgs e) +213
   System.Web.UI.Control.OnLoad(EventArgs e) +92
   System.Web.UI.Control.LoadRecursive() +54
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772 

It used to be like that ever since I installed it, meaning before I touch stored procedures etc.

Note: In stored procedures I simply touched the vts_spVoterResumeSession one where it says:

WHERE SurveyID  = @SurveyID AND ResumeUid = @ResumeUid  Validated=1

and removed the Validated=1 .So basically its not something that would really make something like that.

 EDIT: Also I tried to figure out the numbers:

_3, _120, _123, etc... They are nowhere in my database. And I cleaned voters several times but the numbers remain the same. So that means they are either related to the questions or something else.

EDIT#2:  I imported one of the survey samples and it worked perfectly. I thought it might be the questions, so I was thinking that instead of having the questions themselves show up on the header of the table, perhaps to show the question ID. Where should I look for this part of the code that places the questions in the header? I thought it was FieldReporting.aspx but I cant seem to find any reference to it.

Also I am also working on the files I downloaded from codeplex, but Im having a problem. Say I want to modify the FieldReport.aspx  . This is connected to FieldReport.aspx.cs ,  FieldReport.aspx.resx, FieldReport.aspx.designer.cs etc but these are nowhere in the folders of the actual application. Is there some sort of compilation I need to apply or something?

EDIT#3:  Ok it seems that the problem is that the Answer Text field in the answer settings in designer mode cannot have braces '[' or ']'.