Hello,

i have two nested Macros. The first one is this:

    @inherits Umbraco.Web.Macros.PartialViewMacroPage
@{
    var sliderId = @Model.MacroParameters["Slider"];
    var sliderContent = (Umbraco.Web.PublishedContentModels.Slider)Umbraco.TypedContent(sliderId);
    var teasers = sliderContent.Teasers.Split(',').Select(s => (IMasterTeaser)Umbraco.TypedContent(s));
}
<div id="carouselMacro" class="carousel slide" data-ride="carousel">
    <ol class="carousel-indicators">
        <li data-target="#carouselMacro" data-slide-to="0" class="active"></li>
        <li data-target="#carouselMacro" data-slide-to="1"></li>
        <li data-target="#carouselMacro" data-slide-to="2"></li>
    </ol>

    <div class="carousel-inner" role="listbox">
        @{var enumerable = teasers as IMasterTeaser[] ?? teasers.ToArray();}
        @foreach (var teaser in enumerable)
        {
            @Umbraco.RenderMacro(teaser.TemplateMacro.ToString(), new { TeaserId = teaser.Id, IsFirst = teaser == enumerable.First() })
        }
    </div>

    <a class="left carousel-control" href="#carouselMacro" role="button" data-slide="prev">
        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
        <span class="sr-only">Zurück</span>
    </a>
    <a class="right carousel-control" href="#carouselMacro" role="button" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
        <span class="sr-only">Weiter</span>
    </a>
</div>

the second Macro ist nested in the first one and looks like this:

@inherits Umbraco.Web.Macros.PartialViewMacroPage
@{
    var teaser = (Teaser) Umbraco.TypedContent(Model.MacroParameters["TeaserId"]); //Throws exception
}
<div class="item @(((bool)Model.MacroParameters["IsFirst"])? "active" : "") ">
</div>

I marked the postition were the exeption is thrown.

This is my Stacktrace:

System.InvalidCastException: Specified cast is not valid. at ASP.PageViewsMacroPartialsDefaultImageTeaserMacrocshtml.Execute() in c:\Dev\PGM\trunk.NET\Orca.Homepage.Web\Views\MacroPartials\DefaultImageTeaserMacro.cshtml:line 5 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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) 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.Web.Macros.PartialViewMacroEngine.Execute(MacroModel macro, INode node) at umbraco.macro.LoadPartialViewMacro(MacroModel macro) at umbraco.macro.renderMacro(Hashtable pageElements, Int32 pageId) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(macro m, IDictionary2 parameters, page umbracoPage) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters, page umbracoPage) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters) at Umbraco.Web.UmbracoHelper.RenderMacro(String alias, Object parameters) at ASP._Page_Views_MacroPartials_Slider_cshtml.Execute() in c:\Dev\PGM\trunk\.NET\Orca.Homepage.Web\Views\MacroPartials\Slider.cshtml:line 18 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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) 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.Web.Macros.PartialViewMacroEngine.Execute(MacroModel macro, INode node) at umbraco.macro.LoadPartialViewMacro(MacroModel macro) at umbraco.macro.renderMacro(Hashtable pageElements, Int32 pageId) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(macro m, IDictionary2 parameters, page umbracoPage) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters, page umbracoPage) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters) at Umbraco.Web.UmbracoHelper.RenderMacro(String alias, IDictionary`2 parameters) at ASP.PageViewsPartialsgrideditorsmacrocshtml.Execute() in c:\Dev\PGM\trunk.NET\Orca.Homepage.Web\Views\Partials\Grid\Editors\Macro.cshtml:line 13 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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model) at ASP.PageViewsPartialsgrideditorsbase_cshtml.Execute() in c:\Dev\PGM\trunk.NET\Orca.Homepage.Web\Views\Partials\Grid\Editors\Base.cshtml:line 19

I decompiled the throwing method it looks like this:

public override void ExecutePageHierarchy()
    {
      if (WebPageHttpHandler.ShouldGenerateSourceHeader(this.Context))
      {
        try
        {
          string virtualPath = this.VirtualPath;
          if (virtualPath != null)
          {
            string str = this.Context.Request.MapPath(virtualPath);
            if (!str.IsEmpty())
              this.PageContext.SourceFiles.Add(str);
          }
        }
        catch
        {
        }
      }
      TemplateStack.Push(this.Context, (ITemplateFile) this); //Think throwed here
      try
      {
        this.Execute();
      }
      finally
      {
        TemplateStack.Pop(this.Context);
      }
    }

For my opinion it only can throw the exeption on the marked line but "this" is implementing "ITemplateFile".

The error occured on a fresh umbraco installation.

Anyone some ideas?

Thanks a lot,

Niklas