Object reference not set to an instance of an object.
at DotNetNuke.Framework.DefaultPage.CreateChildControls() in d:\时代电气半导体\WebSite\Default.aspx.cs:line 714
at System.Web.UI.Control.EnsureChildControls()
at System.Web.UI.Control.FindControl(String id, Int32 pathOffset)
at DotNetNuke.Framework.AJAX.GetScriptManager(Page objPage) in F:\DNN项目源码\GlobalstechSource\trunk\Community\Library\Framework\AJAX.cs:line 131
at DotNetNuke.Framework.AJAX.AddScriptManager(Page page, Boolean checkCdn) in F:\DNN项目源码\GlobalstechSource\trunk\Community\Library\Framework\AJAX.cs:line 61
at DotNetNuke.Framework.PageBase.OnInit(EventArgs e) in F:\DNN项目源码\GlobalstechSource\trunk\Community\Library\Framework\PageBase.cs:line 241
at DotNetNuke.Framework.DefaultPage.OnInit(EventArgs e) in d:\时代电气半导体\WebSite\Default.aspx.cs:line 566
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)