Hello. There is a trouble with new version of WASAPI. The component is installed but there is no WASAPI devices available in the output settings. What does it mean?
(http://s017.radikal.ru/i406/1304/03/32bbc5531ddd.png)
(http://s51.radikal.ru/i133/1304/b2/525f4bd0e5fb.png)
Version 2.1 works well.
What OS and sound card are you using? Does console report anything?