Umbraco version: 7.2.1
Asp.net version: 4.5.1
Windows: Server 2012
IIS: 8.0

I've been trying to create a custom back office area I've followed this guild and this solution, however every time I click the elipses next to any of the nodes in the tree I recieve a 404 error.

Request error:

The URL returned a 404 (not found):/umbraco/backoffice/ESIBackOffice/BackOfficeTree/GetMenu

My application definition looks like this

namespace esi_back_office
{
    [Application("ESIBackOffice", "Back Office", "icon-satellite-dish", 15)]
    public class BackOfficeApplication : IApplication { }
}

My Tree controller looks like this

namespace esi_back_office.Controllers
{
    [PluginController("ESIBackOffice")]
    [Tree("ESIBackOffice", "ESIBackOfficeTree", "Functions")]
    class BackOfficeTreeController : TreeController
    {
        protected override TreeNodeCollection GetTreeNodes(string id, FormDataCollection queryStrings)
        {
            var nodes = new TreeNodeCollection();

            nodes.Add(CreateTreeNode("reports", id, queryStrings, "Reporting", "icon-user", false));
            nodes.Add(CreateTreeNode("classes", id, queryStrings, "Classes", "icon-school", false));

            return nodes;
        }

        protected override MenuItemCollection GetMenuForNode(string id, FormDataCollection queryStrings)
        {
            var menu = new MenuItemCollection();

            if (id == Constants.System.Root.ToInvariantString())
            {
                menu.Items.Add<CreateChildEntity, ActionNew>(ui.Text("actions", ActionNew.Instance.Alias));
            }
            else
            {
                menu.Items.Add<ActionDelete>(ui.Text("actions", ActionDelete.Instance.Alias));
            }

            return menu;
        }
    }
}

And the filesystem inside of App_Plugins is

• ESIBackOffice\backoffice\ESIBackOfficeTree\
  • create.htm
  • edit.htm

At this point I don't know what I don't know. From the aforementioned guildes I think this shoudn't be happening but again I don't know what I don't know about this problem.