Yeah I got the same problem, apparently some issue that appears with that dll sometimes, heres how you fix it.
1. Open Control Panel and click on Programs and Features. Click on "View Installed Updates" and look for KB938194. Uninstall it, reboot.
2. Reinstall it from
here and reboot again.
3. If the update is not installed, take a trip to Windows Update and install all updates for your OS.