I am using Radchart in a usercontrol for one of our application. The version of Telerik I have is 2012.1.215.40. I have Windows7 OS and IIS7. I have required Web.config entries in both System.Web and System.WebServer (Actually the entries were generated by the smarttag "Add RadChart HTTP Handler to Web.Config
The radchart shows up fine for the first time. When i click the same page from the menu, the rad chart shows up a popup "Error loading RadChart image"
I tried the suggestions given by Evgenia in this post
. Even setting usesession=false and setting the temp folder property resulting in the same sequence, first time it loads properly and second time when I load the page again it shows the error popup.