There is an issue with KB3106614. The issue is that it should not be installed att all on a Windows Server 2008 R2 Core Server. That patch is a Security Update for Silverlight and it has nothing to do with the Core edition of Windows Server 2008 R2, this is what happens:
We cannot change the settings on the patch(wich is in this case obvisily incorrect), but we can prevent the update process in LiteTouch to install it by adding WUMU_ExcludeKB. It is also possible to set this in customsettings.ini, but that will prevent this from being installed for other Operating System. So, IMHO, for a ref image creation the easiest way would be to block it by setting this in the Task Sequence.