I'm reading through Rob Ashton's excellent blog post on RavenDB: http://codeofrob.com/archive/2010/05/09/ravendb-an-introduction.aspx

and I'm working through the code as I read. But when I try to add an index, I get a 401 error. Here's the code:

class Program
{
    static void Main(string[] args)
    {
        using (var documentStore = new DocumentStore() { Url = "http://localhost:8080" })
        {

            documentStore.Initialise();

            documentStore.DatabaseCommands.PutIndex(
                "BasicEntityBySomeData",
                new IndexDefinition<BasicEntity, BasicEntity>()
                {
                    Map = docs => from doc in docs
                                  where doc.SomeData != null
                                  select new
                                  {
                                      SomeData = doc.SomeData
                                  },
                });


            string entityId;

            using (var documentSession = documentStore.OpenSession())
            {
                var entity = new BasicEntity()
                {
                    SomeData = "Hello, World!",
                    SomeOtherData = "This is just another property",
                };

                documentSession.Store(entity);
                documentSession.SaveChanges();

                entityId = entity.Id;

                var loadedEntity = documentSession.Load<BasicEntity>(entityId);
                Console.WriteLine(loadedEntity.SomeData);

                var docs = documentSession.Query<BasicEntity>("BasicEntityBySomeData")
                    .Where("SomeData:Hello~")
                    .WaitForNonStaleResults()
                    .ToArray();

                docs.ToList().ForEach(doc => Console.WriteLine(doc.SomeData));

                Console.Read();
            }

        }
    }

It throws the 401 error when on the line that makes the PutIndex() call. Any ideas what permissions I need to apply? And where I need to apply them?