Dota 2 Patch 19 November 2013

The update will be applied automatically when your Steam client is restarted
Valve has issued a new Dota 2 patch, which fixes several bugs that caused recipes to be generated with incorrect requirements. In addition, couriers that scale their particle effects based on their games viewed will work again. And uncraftable items will no longer be generated as required inputs for recipes; recipes that currently have uncraftable inputs will be adjusted to require a random item of the same rarity.