Nope, it was already installed...
Problemereignisname: CLR20r3
Problemsignatur 01: s3d.exe
Problemsignatur 02: 1.0.0.0
Problemsignatur 03: 4a79e237
Problemsignatur 04: System.Configuration
Problemsignatur 05: 2.0.0.0
Problemsignatur 06: 51e9fc45
Problemsignatur 07: 27b
Problemsignatur 08: 2f
Problemsignatur 09: Exception
Betriebsystemversion: 6.1.7601.2.1.0.256.48
Gebietsschema-ID: 1031