I got this error while i was trying to create a web application - 'One or more types failed to load'. So i tried to run psconfig and got the same error.
Windows Server 2008 R2 x64
SharePoint Server 2007 x64 with MOSS SP1, MOSS SP2, WSS SP1 and WSS SP2
Microsoft Office Professional 2010 x64
Microsoft SQL Server 2005
And, here is the complete error -
Log Name: Application
Source: SharePoint Products and Technologies Configuration Wizard
Date: 8/27/2010 3:30:28 PM
Event ID: 104
Task Category: None
Failed to register SharePoint services.
An exception of type Microsoft.SharePoint.Upgrade.SPUpgradeException was thrown. Additional exception information: One or more types failed to load. Please refer to the upgrade log for more details.
Microsoft.SharePoint.Upgrade.SPUpgradeException: One or more types failed to load. Pleas
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