January 26, 2008 Patch (Portal)

{{Patch layout
 * game = portal
 * source      = http://store.steampowered.com/news/1420/
 * source-title = Half-Life 2: Episode Two/Portal Update Released
 * before      = November 27, 2007 Patch (Portal)
 * after       = June 10, 2008 Patch (Portal)
 * notes       =

Half-Life 2: Episode Two/Portal
}}
 * Fixed crash when attempting to update the achievement count