Disable your Firewall If You have One. Also check your internet connection. When it says it can't be displayed, Refresh the page. The download might be down due to an update or something. If you need more help, Come back to me, Hun.
~Spacey
EDIT: What browser are you using? I tried to download it and I Use Internet Explorer and Nothing happened, But when I went on Fire Fox, it worked fine. Try Switching your Browser.
Steps To Disable Your Firewall/Security System (Norton):
Open your Security System and click "Settings"
Next, Click Antivirus
Then go to Auto protect and click the little green bar so it Becomes Red and says "Off" instead of "On"
Finally, Click apply and then How Many minutes You want it off.