When using Google Chrome the DF Studio login page will appear as a completely blank white page. A new feature in Google Chrome blocks pages that contain mixed http / https content. DF Studio login is secure (https), but for speed, the page graphics are loaded over http. You can continue to use Google Chrome with just a few clicks. Click the small shield icon inside the address bar on the right side. A dialog box will appear notifying you that the page has "insecure content", click the "Load Anyway" button. That is it, DF Studio will from now on continue to load normally.