what's your code look like?

Sorry, the code is as follows:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using umbraco.cms.businesslogic.web;
using umbraco.BusinessLogic;
using umbraco.cms.businesslogic.member;
using umbraco.cms.businesslogic;
using umbraco.cms.businesslogic.property;
public partial class ScrapUpload : System.Web.UI.UserControl
{
    public string ProduktTypeAlias { get; set; }
    public string ProduktAlias { get; set; }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DocumentType dt = DocumentType.GetByAlias(ProduktTypeAlias);
            IEnumerable<Document> docs = Document.GetDocumentsOfDocumentType(dt.Id)
                .OrderBy(doc => doc.sortOrder)
                .Where(doc => doc.Published);
            var lowestLevel = docs.Min(doc => doc.Level);
            foreach (Document parentDoc in docs.Where(doc => doc.Level == lowestLevel))
            {
                ScrapProductType.Items.Add(new ListItem(parentDoc.Text, parentDoc.Id.ToString()));
                foreach (Document childDoc in docs.Where(doc => doc.ParentId == parentDoc.Id))
                {
                    ScrapProductType.Items.Add(new ListItem("-- " + childDoc.Text, childDoc.Id.ToString()));
                }
            }
        }
    }
    protected void ScrapSave_Click(Object sender, EventArgs e)
    {
        if (Member.IsLoggedOn())
        {
            int category = int.Parse(ScrapProductType.SelectedValue);
            DocumentType dt = DocumentType.GetByAlias(ProduktAlias);
            User user = User.GetUser(0);
            Member member = Member.GetCurrentMember();
            Log.Text = member.ToString();
            Document document = Document.MakeNew(ScrapName.Text, dt, user, category);
            Property navn = document.getProperty("navn");
            navn.Value = ScrapName.Text;
            Property beskrivelse = document.getProperty("beskrivelse");
            beskrivelse.Value = ScrapDescription.Text;
            Property indsendtAf = document.getProperty("indsendtAf");
            indsendtAf.Value = member;
            document.Save();
        }
    }
}

And the ascx is as follows:

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ScrapUpload.ascx.cs" Inherits="ScrapUpload" %>
<ul>
    <li>
        <asp:Label AssociatedControlID="ScrapName" runat="server" Text="Navn:" />
        <asp:TextBox ID="ScrapName" runat="server" />
    </li>
    <li>
        <asp:Label AssociatedControlID="ScrapDescription" runat="server" Text="Beskrivelse:" />
        <asp:TextBox ID="ScrapDescription" runat="server" />
    </li>
    <li>
        <asp:Label AssociatedControlID="ScrapProductType" runat="server" Text="Kategori:" />
        <asp:DropDownList ID="ScrapProductType" runat="server" />
    </li>
    <li>
        <asp:Label AssociatedControlID="ScrapImage" runat="server" Text="Billed:" />
        <asp:FileUpload ID="ScrapImage" runat="server" />
    </li>
</ul>
<asp:Button ID="ScrapSave" runat="server" OnClick="ScrapSave_Click" Text="Gem" />
<asp:TextBox ID="Log" runat="server" TextMode="MultiLine"></asp:TextBox>

Your code looks legit (the new document will not be published using this code, but I gather you're aware of this)

The error makes me think about the properties on the documenttype and the datatypes connected to these properties. Did you check that all the properties on the documenttype are correct? Are you able to create a new document of this type using the Umbraco backend?

Regards
Jesper Hauge

Well, there are more properties on the document type, but as long as I only save the document and not publish I should be home free, right? Also, it is possible for me to create a document of this type in the backend.

I solved my problem, and I'll post my solution, although I don't like how it worked out.

First of all, I switched the site from Integrated Mode to Classic Mode, because the admin was acting up (when i logged in to the frontend, none of the admin sections showed any child nodes).

Then i deleted all document properties on that document type, and recreated the exact same properties. The property types are as follows:

• Textstring
• Textbox Multiple
• Member Picker
• Upload

is working on a reply...