I think that this might help you: http://world.episerver.com/Modules/Forum/Pages/Thread.aspx?id=82955&epslanguage=en

Thanks, I've done as stated. But to no effect unfortunately, I still have to add the gadget manually. Code looks identical and I recieve no build errors either. When I put "content" instead of "dashboard", I could no longer add it manually.

    [Component]
    public sealed class DashboardWidget : ComponentDefinitionBase
    {
        public DashboardWidget () : base("vizzit.dashboard-widget")
	{
            PlugInAreas = new[] { PlugInArea.DashboardDefaultTab };
            Categories = new string[] { "dashboard" };
            Title = "Vizzit";
            Description = "Shows summarized statistics.";
	}

        /// <summary>
        /// Creates the dojo component. Since we want to pass additional values to the client,
        /// we need to override this method.
        /// </summary>
        /// <returns></returns>
        public override IComponent CreateComponent()
        {
            Settings["ajaxPath"] = Constants.AJAX_URL;
            return base.CreateComponent();
        }
    }

    Any ideas? The documentation is quite limited around this front, so I must ask. Note that I am running EPiServer 7.5.