One observation: If you have files in your root content folder, you can't access them directly by putting their address into the browser.
You can load them by clicking in the gallery but you can't link to them from outside.
Instead, you just get a blank screen apart from the menu items.
If you click on a gallery folder after trying this, it loads to first image in the subfolder straight away, rather than showing the folder's thumbnails.
If you link to a file in a subfolder, it shows fine.