Architecture / Installation

Thanks again for this invaluable clue Damian. The templates_c directory and its contents are not writeable by www (Apache). Although, as I said, I've had no problems up till a couple of weeks ago, even when the setup.sh script returned "Operation not permitted" or "Permission denied," I think the root of the problem may be that the setup.sh may no longer works with my hosting provider. I'll ask them to change the permissions on those directories/subdirectories and files and see if that gets me back on track.