Read the statement by Michael Teeuw here.
I’m having an issue with the camera module. The showCamera voice command works and I can say Selfie to take a picture. I then say hideCamera to make the camera feed on the mirror disappear. I then try to bring the camera feed up again by saying showCamera, but it doesn’t work. I reboot the pi and it works, but only once. I have to reboot the pi each time I hide the camera.
I don’t know if I can help you but maybe we can track down the issue by process of elimination.
What Pi are you using?
What version of MM are you using?
What cam are you using? There’s a compatibility list online somewhere.
Are you using the mic from the cam?
Are there any errors in your terminal or console?