Seeing the exact same issue.
Stopped working after the mandatory reboot of the windows update which installed (in German, sorry):
- Update für die Kompatibilitätsansichtsliste für Internet Explorer 8 für Windows Server 2008 R2 x64 Edition (KB982632)
- Regelupdate für Best Practice Analyzer für Active Directory-Domänendienste für Windows Server 2008 R2 x64 Edition (KB980360)
- Update für Microsoft Silverlight (KB982926)
- Update für Windows Server 2008 R2 x64 Edition (KB980846)
- Update für Windows Server 2008 R2 x64 Edition (KB982519)
- Microsoft .NET Framework 4 für Windows Server 2008 R2 x64-basierte Systeme (KB982671)
- Update für Windows Server 2008 R2 x64 Edition (KB981793)
- Update für Best Practices Analyzer für Dateidienste für Windows Server 2008 R2 x64 Edition (KB981111)
- Windows-Tool zum Entfernen bösartiger Software x64 - Juni 2010 (KB890830)
I don't see any relevance in KB982632, KB980360, KB982926, KB981111 and KB890830.
That leaves
- KB981793 (time zone change) - capable of causing trouble with outlook, but only because of wrong times in calendar entries - not very likely IMHO
- KB980846 and KB982519 (changes in dll compatibility) - maybe
- KB982671 (.NET 4) - BIG install - who knows
@itdTechnician: Were any of those installed on your system before the error?
Scraping the Database and reinstalling is not an option that seems very appealing to me...