System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at MOJ.Extend.Utilities.Extension.IPublishContentHelper.loadMediaMap() at MOJ.Extend.Utilities.Extension.IPublishContentHelper.GetExtendMediaPickerInfo(IPublishedContent content, String alias, Boolean setFirstMedia) at ASP._Page_Views_MacroPartials_unit_Header_cshtml.Execute() in d:\MOJAP\MOJCMS-2\Views\MacroPartials\unit_Header.cshtml:line 34 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.Mvc.WebViewPage.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) at Umbraco.Web.Mvc.ControllerExtensions.RenderViewResultAsString(ControllerBase controller, ViewResultBase viewResult) at Umbraco.Web.Macros.PartialViewMacroEngine.Execute(MacroModel macro, IPublishedContent content) at umbraco.macro.LoadPartialViewMacro(MacroModel macro) at umbraco.macro.renderMacro(Hashtable pageElements, Int32 pageId) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(macro m, IDictionary`2 parameters, page umbracoPage) at ASP._Page_Views_Partials_TypedGrid_Editors_macro_cshtml.Execute() in d:\MOJAP\MOJCMS-2\Views\Partials\TypedGrid\Editors\Macro.cshtml:line 16 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.Mvc.WebViewPage.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at ASP._Page_Views_Partials_TypedGrid_Editors_Base_cshtml.Execute() in d:\MOJAP\MOJCMS-2\Views\Partials\TypedGrid\Editors\Base.cshtml:line 18