Hi experts

Iam trying to create nodes in the content tree dynamically, in an old version 4.0.3, FW2.0, high performance pc, Its about 300 items, with 15 singletext properties, my code is:

       public static string CreateRegister(string id, string vname, string name, string add, string add2, string zip, string city, string phone, string fax, string email, string homepage, string employees, string description, bool member, bool visning)
        {
            try
            {
                //Get the type you would like to use by its alias 
                //and the user who should be the creator of the document 
                DocumentType dt = DocumentType.GetByAlias("Register");
                User author = User.GetUser(0);

                //create a document with a name, a type, an umbraco user, and the ID of the document's parent page. 
                //To create a document at the root of umbraco, use the id -1 

                Document doc = Document.MakeNew(vname, dt, author, 38549);

                //after creating the document, prepare it for publishing 

                doc.getProperty("id").Value = id;
                doc.getProperty("vname").Value = vname;
                doc.getProperty("name").Value = name;
                doc.getProperty("add1").Value = add;
                doc.getProperty("add2").Value = add2;
                doc.getProperty("zip").Value = zip;
                doc.getProperty("city").Value = city;
                doc.getProperty("phone").Value = phone;
                doc.getProperty("fax").Value = fax;
                doc.getProperty("email").Value = email;
                doc.getProperty("homepage").Value = homepage;
                doc.getProperty("employees").Value = employees;
                doc.getProperty("description").Value = description;
                doc.getProperty("member").Value = member ? 1 : 0;
                doc.getProperty("visning").Value = visning ? 1 : 0;
                doc.Publish(author);

            }
            catch (Exception e)
            {
                return e.Message;
                throw;
            }

            return "Success";
        }

1: First of all, are my new items not published

2: All items get the exception, but is in the content tree

System.NullReferenceException was caught
  Message=Object reference not set to an instance of an object.
  Source=Code
  StackTrace:
       at Code.ErhvervKal.CreateRegister(String id, String vname, String name, String add, String add2, String zip, String city, String phone, String fax, String email, String homepage, String employees, String description, Boolean member, Boolean visning) in C:\Users\Jacob\Documents\ErhvervKalundborg\Code\Code\Class1.cs:line 98
  InnerException: 

<Import type="Virksomhed" id="{@cId}" navn="{@firmanavn}" import="{EK:CreateRegister(@cId, @firmanavn, @cPerson1, @add, @add2, @zip, @city, @phone, @fax, @main, 'homepage', 'employees', @desc, @o1, @o2)}"/>