Hi Stefan,
the farm update wizard failed with:
“Exception: System.IO.InvalidDataException: The web configuration file, C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\config\WEBCONFIG.ACCSRV.XML, does not have element “configuration/configSections/sectionGroup[@name=’SharePoint’]” or it is invalid.”
DEV environment, updated from a fully patched Project Server 2010 CU October 2015-10.
Kind regards,
Adrian