Some users have pointed out a rights issue in our Raspbian Image "Raspbian + WSL 2013-05-2013 image" on WebSolarLog.com. Apparently the webserver user has insufficient rights on the current image to create the database and execute Websolarlog.
We are working on a fix for this issue, and for now we can provide you with this workaround. Please execute the following command:
sudo chmod 777 -R usr/share/nginx/www/websolarlog/
You could also try lesser rights, as long as the webserver user has RW persmissions.
Please update to the latest trunk release (Admin::Update) and check the "DB state" section on the test page (Admin::Test page).