When I try upload an image (via Media/Add New), I get an error message:
"Unable to create directory /var/www/vhosts/managementhelp.org/httpdocs/blogs/wp-content/blogs.dir/5/files. Is its parent directory writable by the server?"
So WP MU wants write permission to the root of my web host company's shared server (which has many other customers on it). The company understandably doesn't want to give me that permission because that would permit me to access the files of the company's other customers.
How can I reconfigure WP MU to only access files in my account, without trying to access the root directory of the server?
Thanks in advance!