C# macro doesn't work anymore

Hi all,

So I wrote up this macro last year to convert bulk drawings into PDFs and since upgrading to 2015 it doesn't work. Any chance someone could have a quick look and tell me whats wrong with it or a better way to do this? It's only a tiny bit of code. It doesn't get an error or anything I run it and it just doesn't do anything.

Thanks,

Tom.

using SolidWorks.Interop.sldworks;

using SolidWorks.Interop.swconst;

using System.Runtime.InteropServices;

using System;

using System.IO;

namespace PDF.csproj

{

    public partial class SolidWorksMacro

    {

        public void Main()

        {

            string pdfPath;

            string Path = "C:\\Solidworks\\05-Portable Safety Barriers\\13-T Lok Screen 5.4m";

            string txtPath = Path + "\\UpdatedPDFs.txt";

            //string Date = DateTime.Now.ToShortDateString();

            string[] drwPaths = System.IO.Directory.GetFiles(Path, "*.SLDDRW", SearchOption.AllDirectories);

            foreach (string s in drwPaths)

            {

                if (!s.Contains("~\$"))

                {

                    ModelDoc2 swDoc = null;

                    int longstatus = 0;

                    int longwarnings = 0;

                    pdfPath = s;

                    pdfPath = pdfPath.Replace("Drawings", "PDFs").Replace("SLDDRW", "PDF");

                    (new FileInfo(pdfPath)).Directory.Create();

                    swDoc = ((ModelDoc2)(swApp.OpenDoc6(s, 3, 1, "", ref longstatus, ref longwarnings)));

                    longstatus = swDoc.SaveAs3(pdfPath, 0, 0);

                    swDoc = null;

                    swApp.CloseAllDocuments(true);

                }

            }

            //System.IO.File.WriteAllText(txtPath, Date);

         }

        ///

        ///  The SldWorks swApp variable is pre-assigned for you.

        ///

        public SldWorks swApp;

    }

}

SolidworksApi macros