SAPI 5.1 FacePoser Error
From Valve Developer Community
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:
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
where X is the volume in which Steam is installed.