Hi,

I have used contour in many sites for our clients. For first time I am seeing this problem with "Contour". By default contour macro comes with "Render in rich text editor and the grid" option enabled. I inserted the macro in RTE, after loading sometime it throws error. Error with status of "500" in "GetMacroResultAsHtmlForEditor". In log I am getting below error message

> WARN  umbraco.macro - [T99/D36] Error loading MacroEngine script
> (file: MvcRenderContourForm.cshtml, Type: ''. Exception:
> System.InvalidOperationException: The SessionStateTempDataProvider
> class requires session state to be enabled.    at
> System.Web.Mvc.SessionStateTempDataProvider.SaveTempData(ControllerContext
> controllerContext, IDictionary`2 values)    at
> System.Web.Mvc.TempDataDictionary.Save(ControllerContext
> controllerContext, ITempDataProvider tempDataProvider)    at
> System.Web.Mvc.Controller.PossiblySaveTempData()    at
> System.Web.Mvc.Controller.ExecuteCore()    at
> System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext)  
> at
> System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext
> requestContext)    at
> Umbraco.Forms.Mvc.Bridge.Html.MvcBridgeExtensions.RenderMvcAction(HtmlHelper
> helper, String action, String controller, String formId, String
> antiForgeryToken, Object node, Object parameter) in
> f:\TeamCity\buildAgent\work\fd622d7f786e1305\Umbraco.Forms.Mvc\Bridge\Html\MvcBridgeExtensions.cs:line
> 84    at ASP._Page_macroScripts_MvcRenderContourForm_cshtml.Execute()
> in \wwwroot\macroScripts\MvcRenderContourForm.cshtml:line 9    at
> System.Web.WebPages.WebPageBase.ExecutePageHierarchy()    at
> System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1
> executors)    at System.Web.WebPages.WebPage.ExecutePageHierarchy()   
> at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext
> pageContext, TextWriter writer, WebPageRenderingBase startPage)    at
> umbraco.MacroEngines.RazorMacroEngine.ExecuteRazor(MacroModel macro,
> INode currentPage)    at
> umbraco.MacroEngines.RazorMacroEngine.Execute(MacroModel macro, INode
> currentPage)    at umbraco.macro.loadMacroScript(MacroModel macro)   
> at umbraco.macro.renderMacro(Hashtable pageElements, Int32 pageId)

For now I disabled the render option in macro properties. Beside disabling the render option if anyone have the solution to fix this problem, could you please share with me?

Thanks

PTamang