I was lazy and decided to uninstall my Beta SharePoint, delete all of the databases, then re-install SharePoint 2010 RTM on my server. Everything ran perfectly through the install until I ran the SharePoint Products Configuration Wizard and received the error shown below. Task configdb has failed with an unknown exception 07/14/2010 10:39:47 8 ERR Exception: System.InvalidCastException: Unable to cast object of type 'Microsoft.IdentityModel.Configuration.MicrosoftIdentityModelSec...