I have installed Dropbox on my wifes desktop pc and it works fine. I installed it on her laptop and I can use the web based homepage to log in and upload files fine, HOWEVER, the system tray icon is grey and gives the message'waiting to be connected to a Dropbox account'. When I click 'Click here to get sign in and get started', a set up dropbox window pops up and a blue icon revolves, and then stops, forever!! It is version 52.4.60 and I have uninstalled it and reinstalled it twice. Anyone got any suggestions?