Exception with ArcObjects 10 Address Standardizer

[RiamDjadri]

Hello,

I'm having trouble with the new standardizer. The following code produces an exception on the second call to ParseAddressSample(). Any ideas ?

using System;
using System.Collections.Generic;
using System.Text;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.DataSourcesGDB;

using ESRI.ArcGIS.Location;


namespace PopulateRC
{
    class Program
    {

        private static IWorkspace pwps = null;
        private static AoInitialize _arcObjects = null;

        [STAThread]
        static void Main(string[] args)
        {

            IWorkspaceFactory workspaceFactory = null;

            //ArcGIS10
            ESRI.ArcGIS.RuntimeManager.BindLicense(ESRI.ArcGIS.ProductCode.Engine);

            workspaceFactory = new FileGDBWorkspaceFactoryClass();
          
            //Path of file GDB.  Change it if necessary
            string connstr = @"C:\GisData\PowerMap.gdb";
          

            ArcObjectsStart();
            pwps = workspaceFactory.OpenFromFile(connstr, 0);

            if (pwps != null)
            {
                //First, a classic case.  This one works!
                ParseAddressSample("10 main st");
                
                //Exception thrown with this string
                ParseAddressSample("main st");

            }
            Console.WriteLine("Press any key to finish");
            Console.ReadLine();
        }


        private static void ParseAddressSample(string freeFormat)
        {
            LocatorManagerClass locatorManager = new LocatorManagerClass();
            ILocatorWorkspace locatorWorkspace = (ILocatorWorkspace)locatorManager.GetLocatorWorkspace(pwps);
            ILocator locator = locatorWorkspace.GetLocator("StreetSegment");

            if (locator != null)
            {
                // Get the Locator and QI to ISimpleStandardization
                ISimpleStandardization standardizer = (ISimpleStandardization)locator;

                try
                {
                    // Get the Standardization fields from the locator
                    //  exception on the 2nd call "Specified cast is not valid."
                    IPropertySet standardizedAddressSet = standardizer.SimpleStandardizeAddress(freeFormat); 
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Problem parsing (" + freeFormat + ") " + ex.Message);
                }

            }
        }




        #region "ESRi licencing"
        #endregion

    }
}