Just had a scary moment when a production MVC application went down due to MS Updates removing the MVC 188.8.131.52 dll and replacing it with MVC 184.108.40.206.
Although we located the MS Hotfix (MS14-059), the installer gave us a worrying "Installer Ended Prematurely" error.
The solution was simple - the server needed a reboot to allow it to install some pending updates before the Hotfix could be run.
If I helped you out today, you can buy me a beer below. Cheers!