Upload filer MVC

Hej

Jeg bruger nedenstående code til at oploade filer, til mappen "content".

MVC4  Linq 2 SQL 

Den virker fint på local computer, men ikke når jeg har lagt den på en server.

Kan i se om jeg gør noget forkert, eller er det en fejl på serveren ?

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.IO;


    namespace CFire2.SupplyConUtils
    {
    public static class FileUpload
    {

        public static char DirSeparator =
        System.IO.Path.DirectorySeparatorChar;
        public static string FilesPath = "Content" +
        DirSeparator + "SupplyUpload" + DirSeparator;


        public static string UploadFile(HttpPostedFileBase file)

        {
            // Check if we have a file
            if (null == file) return "No File";


            // Make sure the file has content
            if (!(file.ContentLength > 0)) return "No File";


            string fileName = Path.GetFileName(file.FileName);
            string fileExt = Path.GetExtension(file.FileName);
           

            // Make sure we were able to determine a proper
            // extension
            if (null == fileExt) return "No file";



            // Check if the directory we are saving to exists
            if (!Directory.Exists(FilesPath))
            {
                // If it doesn't exist, create the directory
                Directory.CreateDirectory(FilesPath);
            }

            //// Set our full path for saving
            var path = Path.Combine(HttpContext.Current.Server.MapPath("~/Content/SupplyUpload"), fileName);
           

            if (File.Exists(path)) return "The file has already been uploaded!";


            // Save our file
 

            file.SaveAs(path);

            // Return the filename
            return fileName;


        }
        public static void DeleteFile(string fileName)
        {

            // Set our full path for deleting
            var path = Path.Combine(HttpContext.Current.Server.MapPath("~/Content/SupplyUpload"), fileName);
           

            // Don't do anything if there is no name
            if (fileName.Length == 0) return;



            // Check if our file exists

              if (File.Exists(path))
            {
                // Delete our file
               
                File.Delete(path);
            }
        }
    }
}