Ever get any of these errors?
The DataSourceID of ‘TopNavigationMenu’ must be the ID of a control of type IHierarchicalDataSource. A control with ID ‘topSiteMap’ could not be found. at System.Web.UI.WebControls.HierarchicalDataBoundControl.GetDataSource()
at System.Web.UI.WebControls.HierarchicalDataBoundControl.ConnectToHierarchicalDataSource()
at System.Web.UI.WebControls.HierarchicalDataBoundControl.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Troubleshoot issues with Windows SharePoint Services.
Server Error in ‘/’ Application.
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.
Parser Error Message: This page has encountered a critical error. Contact your system administrator if this problem persists.
Source Error:
Line 1: <%@ Page Inherits="Microsoft.SharePoint.Publishing.TemplateRedirectionPage,Microsoft.SharePoint.Publishing,
Version=12.0.0.0,Culture=neutral,PublicKeyToken=71e9bce111e9429c" %>
<%@ Reference VirtualPath="~TemplatePageUrl" %>
<%@ Reference VirtualPath="~masterurl/custom.master" %> Line 2: <html xmlns:mso="urn:schemas-microsoft-com:office:office"
xmlns:msdt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882"><head> Line 3: <!--[if gte mso 9]><xml>
Source File: /Pages/Default.aspx Line: 1
Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082
Event log error message
Safe mode did not start successfully. Could not load file or assembly ‘MyCompany, Version=1.0.0.0, Culture=neutral, PublicKeyToken=XXXXXXXX’ or one of its dependencies. The system cannot find the file specified.
Solution
In my case the error message from the event log was spot on. I had accidentally removed a MyCompany assembly from the GAC.
Other errors can also cause the same problem, whilst debugging this issue I came across another blog post that might be of interest: http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2008/09/24/safe-mode-did-not-start-successfully-request-failed.aspx
Edward Wilde 