I updated a pi3 with a v2 noir camera board from Jessie to stretch and afterwards raspistill resulted in:
mmal: mmal_vc_component_enable: failed to enable component: ENOSPC
mmal: camera component couldn't be enabled
mmal: main: Failed to create camera component
mmal: Failed to run camera app. Please check for firmware updates
The camera is definitely enabled. By accident I opened the Rpi_Cam_Web_Interface web page and was surprised to see the image load. I had previously run apt-get update, dist-upgrade and rpi-update.
Curious I did clean installs from Noobs on a zeroW and a 2b with the same results when I had got the Rpi_Cam_Web_Interface installed correctly (the nginx install needs rpicam amending for the php-fpm socket location used by php 7.0) .
I thought that previously I was able to use raspistill even when the Rpi_Cam_Web_Interface was running.
Is there another update I need to get raspistill working?