SAPI 5.1 FacePoser Error

If you get an error "SAPI 5.1 Unable to create recognizer context" when you click Redo Extraction in FacePoser, it means you need to install the Microsoft Speech SDK, which can be found here:

http://www.microsoft.com/speech/download/old/sapi5.asp.

If you have already installed SAPI 5.1 and still receive the error a common reason is the audio file needs to be placed in the right folder for faceposer to find.
Add file to your mod here.
X:\Program Files\Steam\SteamApps\SourceMods\yourmod\sound
or alternatively in your HL2 sound folder found here
X:\Program Files\Steam\SteamApps\yourname\half-life 2\hl2\sound