Stijnvandepas
Hi
The error you're receiving is to do with Windows Speech, more specifically - 'No recognizer is installed.'
Initially follow the instructions below taken from the faqs.
'This usually indicates an error with the speech recognition software, this can be fixed by ensuring you have speech and the English language pack installed or you can disable speech altogether by appending -v to the executable launch options.'
Please report back if this fixes the issue.
Kieran