The filesystem is built of just folders and text files, and it creates a blog automatically. Very minimal and doesn't require any kind of admin backend.
Go into the /app folder and change the permissions on the _cache folder to be 777 (completely public).
I thought lots of uploads/cache folders on blogging platforms have 777? I'm a lay person, indulge me.
Go into the /app folder and change the permissions on the _cache folder to be 777 (completely public).