I just talked to our web team - it seems that we have updated some changes on our site, which lead to this problem.
I will suggest trying the following link http://www.telerik.com/support/documentation/telerik-help-center.aspx
to go to www.telerik.com
, then to click on the Support
tab at the top, and finally on the Documentation
link at the left. This should do the trick.
If you tell us which help files you are interested in, we can send you the direct links.
All the best,