I've created a website using Umbraco 4.5 which is working fine. I have to import data into the site from an outside source so I've used a console app but I cannot get it to work.

I just copied the code I found here:
http://en.wikibooks.org/wiki/Umbraco/Samples_and_Articles/Creating_umbraco_pages_programmatically

So the exact code I am using is as follows:

// The documenttype that should be used, replace 10 with the id of your documenttype
var dt = new DocumentType(1234);
        var parentNodeId = 1234;

        // The umbraco user that should create the document, 
        // 0 is the umbraco system user, and always exists
        var u = new umbraco.BusinessLogic.User(0);

        // Create the document
        Document d = Document.MakeNew("Test", dt, u, parentNodeId);

        // Add values to the generic properties of the document
        d.getProperty("MyPropertyName").Value = "11111";

        // Set the publish status of the document and there by create a new version
        //d.Publish(u); 

        // Tell the runtime environment to publish this document
        //umbraco.library.UpdateDocumentCache(d.Id);

The document type and user are created fine, the problem is when it tries to make a new document it does not understand the document type I gave it. It throws an exception of "The given key was not present in the dictionary", and after looking through the Umbraco source code the problem lies in "public IDataType GetNewObject(Guid DataEditorId)" method in the "umbraco.cms.businesslogic.datatype.controls" class - the "_controls" dictionary object has no values.

Firstly I'm not sure why it's doing this as it seems to have everything it needs to create the document? I know the problem has probably got something to do with running Umbraco outside of a web app but I don't know how to fix it.

Can anyone help?