Hi,
SDKBOX auto installer link is http://files.cocos2d-x.org/sdkbox/sdkbox_installer.zip but it seems to be an invalid one since it’s returning HTTP 404 error.
We are looking into this right now. I’ll update shortly.
ok this has been fixed.
Use http://download.sdkbox.com/installer/v1/sdkbox_installer.zip instead, or go back to http://cocos2d-x.org/download
Thanks! 