We are so sorry for the inconvenience. As some of you will know SDK experienced issues with their old Web Host. This prompted a move to a new Web Host who are great and very supportive.
Unfortunately a lot of our American Customers experienced issues when downloading, files either timed out or took forever to download. This issue was investigated throughly but no cause could be found, so we are moving servers.
Hopefully SDK will be up and running again soon, trouble fee. Thank you for your support while we get things back on track.