Hi!

I have made a short script based on the 'Blog 4 Umbraco' that creates folders based on date/month/year. But sometimes it duplicates the folders in the umbraco treeview. Why is that? I see that others have had the same problem also. see this link. It seems to work in iis7.5/win7, but not on iis7/win2k8. Both the duplicated folders has the same ID. Where do I start?

Here is the code:

 using System;
using System.Collections.Generic;
using System.Web;

using umbraco;
using umbraco.cms.businesslogic.web;
using umbraco.BusinessLogic;
using umbraco.BusinessLogic.console;

namespace KS
{
    public class DateTimeFolder : umbraco.BusinessLogic.ApplicationBase
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="BlogDateFolder"/> class.
        /// </summary>
        public DateTimeFolder()
        {
            Document.New += new Document.NewEventHandler(Document_New);
        }

        /// <summary>
        /// Document_s the new.
        /// </summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The <see cref="umbraco.cms.businesslogic.NewEventArgs"/> instance containing the event data.</param>
        void Document_New(Document sender, umbraco.cms.businesslogic.NewEventArgs e)
        {
            Document documentObject = sender;
            if (documentObject.ContentType.Alias == "DateTimeFolderItem")
            {

                if (documentObject.Parent != null)
                {

                    #region MonthFolder
                    if (new Document(documentObject.Parent.Id).ContentType.Alias == "MonthArchive")
                    {
                        string[] strArray = (documentObject.CreateDateTime.Year.ToString() + "-" + documentObject.CreateDateTime.Month.ToString()).Split("-".ToCharArray());
                        if (strArray.Length == 2)
                        {
                            Document document = null;
                            foreach (IconI ni in documentObject.Parent.Children)
                            {
                                if (ni.Text == strArray[0])
                                {
                                    document = new Document(ni.Id);
                                    break;
                                }
                            }
                            if (document == null)
                            {
                                document = Document.MakeNew(
                                    strArray[0],
                                    DocumentType.GetByAlias("DateTimeFolder"),
                                    documentObject.User,
                                    documentObject.Parent.Id);

                                document.Publish(documentObject.User);
                                library.UpdateDocumentCache(document.Id);
                            }
                            else
                            {

                                Log.Add(LogTypes.Debug, documentObject.User, documentObject.Id, "executed - year not null");
                            }
                            Document document2 = null;
                            Document[] children = document.Children;
                            for (int i = 0; i < children.Length; i++)
                            {
                                IconI ni2 = children[i];
                                if (ni2.Text == strArray[1])
                                {
                                    document2 = new Document(ni2.Id);
                                    break;
                                }
                            }
                            if (document2 == null)
                            {
                                document2 = Document.MakeNew(strArray[1], DocumentType.GetByAlias("DateTimeFolder"), documentObject.User, document.Id);
                                document2.Publish(documentObject.User);
                                library.UpdateDocumentCache(document2.Id);
                            }
                            else
                            {

                                Log.Add(LogTypes.Debug, documentObject.User, documentObject.Id, "executed - month not null");
                            }

                            documentObject.Move(document2.Id);

                        }
                    }
                    #endregion
                }
            }
        }
    }
}