QuoteIdentifiers in PostgreSql8 doesn't work

I a running a linq query against a postgres database and the identifiers in the lightspeed generated query are quoted.  I did NOT set QuotedIdentifers to true in the config file or in code and verified that the default value is false. Logging from lightspeed shows that all queries have the identifiers quoted.

But the following query causes an NpgsqlException exception:

Npgsql.NpgsqlException:
column g1.gamingterminalid does not exist
Severity: ERROR
Code: 42703
   at Npgsql.NpgsqlState.<ProcessBackendResponses_Ver_3>d__a.MoveNext()
   at Npgsql.ForwardsOnlyDataReader.GetNextResponseObject()
   at Npgsql.ForwardsOnlyDataReader.GetNextRowDescription()
   at Npgsql.ForwardsOnlyDataReader.NextResult()
   at Npgsql.ForwardsOnlyDataReader..ctor(IEnumerable`1 dataEnumeration, CommandBehavior behavior, NpgsqlCommand command, NotificationThreadBlock threadBlock, Boolean synchOnReadError)
   at Npgsql.NpgsqlCommand.GetReader(CommandBehavior cb)
   at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior cb)
   at Npgsql.NpgsqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
   at ...()
   at ..(IUnitOfWork , IDbCommand ,
)
   at ..(IUnitOfWork , IDbCommand )
   at Mindscape.LightSpeed.Data.DataProviderAdapter.
(IUnitOfWork ,  , ProviderOptions )
   at ..(Query )
   at Mindscape.LightSpeed.UnitOfWork.Project(Query query)
   at Mindscape.LightSpeed.Linq.Plan.GroupResultsPlan.ExecuteImmediate(IUnitOfWork unitOfWork, Type returnType)
   at Mindscape.LightSpeed.Linq.LinqQueryProvider.Execute(Expression expression)
   at Mindscape.LightSpeed.Linq.LinqQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression)
   at Mindscape.LightSpeed.Linq.LinqQuery`1.GetEnumerator()
   at BlueYonder.Server.BusinessProcesses.MeterBP.MeterEndOfDay(DateTime eod) in C:\Source\Trunk\TerminalManager\TerminalManager\BusinessProcesses\MeterBP.cs:line 330
   at BlueYonder.Server.BusinessProcesses.MeterBP.CheckEndOfDayActivity() in C:\Source\Trunk\TerminalManager\TerminalManager\BusinessProcesses\MeterBP.cs:line 295
   at BlueYonder.Server.TerminalManager..ctor() in C:\Source\Trunk\TerminalManager\TerminalManager\TerminalManager.cs:line 107
   at BlueYonder.Server.ServerController..ctor(Boolean runAsService) in C:\Source\Trunk\TerminalManager\TerminalManager\ServerController.cs:line 99

Generated Query:

SELECT
  g1.GamingTerminalId
FROM
  (
    SELECT
      Meters.GamingTerminalId AS "GamingTerminalId"
    FROM
      Meters Meters
    GROUP BY
      Meters.GamingTerminalId
  )
  g1

--> Time:   0 ms

linq query:

            var currentMetersByTerminalIdByMeterDefId =
                (from meters in Repository.UnitOfWork.MeterEntities
                 group meters by meters.GamingTerminalId into tg
                 select new
                 {
                     TerminalId = tg.Key,
                     MetersDefinitionGroups =
                         from terminalMeters in tg
                         group terminalMeters by terminalMeters.MeterDefinitionId into mdg
                         select new
                         {
                             MeterDefinitionId = mdg.Key,
                             Meters = mdg,
                         }
                 }).IncludeDeleted();

            foreach (var currentTerminalMeters in currentMetersByTerminalIdByMeterDefId)
            {

-----> Exception occurs on previous foreach

We are using the LightSpeed nightly build from 9/19.

Is there a work around to fix this?  Or do we need to update to a different version of LightSpeed?

Thanks for your help.

Nick