Symptoms
Navigating to organizer.aspx using the correct address displays a ‘Page Not Found Error’ when using IIS6 (Windows Server 2003)
Cause
ASP.NET Extensions are disabled
Resolution
Open the IIS administrator. Expand the server and click on ‘Web Service Extensions’ in the tree view on left, click on ‘ASP.NET v1.1.x’ and then click on the Allow button. Restart IIS if required.