I have Windows 8.1 (recently updated from 8.0). I also recently installed the crossgrade Logos 6. When I open Logos, it asks me if I want to install the Logos updates which have been previously downloaded. If I click yes, it tells me the installation of the Microsoft.NET Framework 4.5 did not succeed. I checked on Windows updates, and there is one called Microsoft.NET Framework 4.5.2 for Windows 8.1 for x64-based systems (KB 2934520). The checkbox for this update comes from Microsoft unchecked, which makes me think there's a problem with it, especially if Logos is trying to install it and not succeeding. Help! (In plain English, please!) Thanks.