I followed the thread here http://www.llblgen.com/tinyforum/Messages.aspx?ThreadID=15287&HighLight=1 which says including the LinqSupportClasses.Net35 should work but it does not for me.

I see WithPath in it, but for some reason it is not available in my class below.

It's added as a reference to my test project.

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using ThreePLogic.DataDataFeedAccessLLBL.DatabaseSpecific;
using ThreePLogic.DataDataFeedAccessLLBL.Linq;

using SD.LLBLGen.Pro.LinqSupportClasses;
using SD.LLBLGen.Pro.ORMSupportClasses;

namespace TestProject
{
    /// <summary>
    /// Summary description for UnitTest1
    /// </summary>
    [TestClass]
    public class UnitTest1
    {
        public UnitTest1()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        private TestContext testContextInstance;

        /// <summary>
        ///Gets or sets the test context which provides
        ///information about and functionality for the current test run.
        ///</summary>
        public TestContext TestContext
        {
            get
            {
                return testContextInstance;
            }
            set
            {
                testContextInstance = value;
            }
        }

        #region Additional test attributes
        //
        // You can use the following additional attributes as you write your tests:
        //
        // Use ClassInitialize to run code before running the first test in the class
        // [ClassInitialize()]
        // public static void MyClassInitialize(TestContext testContext) { }
        //
        // Use ClassCleanup to run code after all tests in a class have run
        // [ClassCleanup()]
        // public static void MyClassCleanup() { }
        //
        // Use TestInitialize to run code before running each test 
        // [TestInitialize()]
        // public void MyTestInitialize() { }
        //
        // Use TestCleanup to run code after each test has run
        // [TestCleanup()]
        // public void MyTestCleanup() { }
        //
        #endregion

        [TestMethod]
        public void TestMethod1()
        {
            using (var adapter = new DataAccessAdapter())
            {
                adapter.ConnectionString = "Data Source=.;Initial Catalog=datafeed ;Persist Security Info=True;User ID=3plogic ;Password=xxx";
                var metaData = new LinqMetaData(adapter);

                var q = (from data in metaData.ColemanStatus90ProNumber
                        select data.ProNumber).WithPath  // not found...
                var r = q.ToList();
            }
        }
    }
}

EDIT: Never mind, solved my own problem. was not returning right type. should have said "select data" not "select data.ProNumber"