Microsoft says, "To address known issues with security update 2982791 [old version], Microsoft rereleased MS14-045 to replace the 2982791 update with the 2993651 update for all supported releases of Microsoft Windows. Microsoft expired update 2982791[old version] on August 15, 2014. All customers should apply the 2993651 update, which replaces the expired 2982791[old version]update. Microsoft strongly recommends that customers who have not uninstalled the 2982791[old version] update do so prior to applying the 2993651 update."
Visiting Windows Update to apply the new patch will NOT remove the 2982791 update - go to Control Panel > Programs and Features > View installed updates to find the old patch. Highlight Security Update for Microsoft Windows (2982791) and click the uninstall button to remove it - see the photo I posted.