May 12, 2011 Patch

{{Patch layout
 * source = http://store.steampowered.com/news/5456/
 * source-title = Portal 2 Update Released


 * before = May 10, 2011 Patch
 * after = May 20, 2011 Patch


 * notes =

Portal 2
}}
 * Fixed Portal 2 Authoring Tools failing to load on WinXP
 * Enabled  convar
 * Minor localization and subtitle fixes for Chinese, Czech, Dutch, English, Finnish, French, German, Hungarian, Italian, Korean, Polish, Portuguese, Russian, Spanish, Thai, Turkish