September 14, 2015 Patch

{{Patch layout
 * source = http://store.steampowered.com/news/18394/
 * source-title = Dota 2 Update - September 14th 2015
 * before = 2015-09-11
 * after = 2015-09-15
 * notes =
 * Fixed some cases where couriers would appear as an error model if a player selected a different courier after entering the game.
 * Fixed Manifold Paradox gravestones blocking neutral creep camps.
 * Adjusted juke paths and ward/blocking around {{faction|radiant}} neutral camp SW of lower rune point.
 * Fixed {{faction|Dire}} fountain ramp width.
 * Fixed an issue with lobby slots being assigned incorrectly.
 * Fixed an issue where mousewheel would stop working in some cases after exiting full preview mode.
 * Fixed a crash when using alt+tab on some configurations.
 * Fixed a case where parties could incorrectly enter Ranked Matchmaking.
 * Fixed portions of the Quit button not accepting clicks.
 * Fixed a crash launching Workshop Tools on Windows 7 without Service Pack 1.
 * Fixed some client crashes.
 * changes =
 * Added reference to Blizzard in the Acknowledgements panel.

Economy
}}
 * The International 2015, The International 2014, Dota 2 Major Fall 2015 items have been tagged with their respective tournament names.
 * Tournament treasures in the Treasury have been tagged with their respective tournament names.