IIS7 WIN 2008 Telerik.Web.UI.WebResource.axd error 500

[Skim]

I'm searching for hours now but nothing I found worked.
I tried out instructions telerik gave and also other approaches.

The page works fine on the first load, but when i push the save button there comes the
error und nothing works.

You can look at the page on http://www.easyteamorganiser.com:82

THANKS FOR HELP!

Sincerely, Skim

[Marin Bratanov]

Hi Skim,

I tried loading the site, yet I was not able to access it: http://screencast.com/t/rIFNsfPktAI. I am not certain which test you have performed, yet I can advise that you try the following:
http://www.telerik.com/help/aspnet-ajax/introduction-troubleshooting.html
http://www.telerik.com/help/aspnet-ajax/introduction-web-resources-troubleshooting.html
You can also try testing which is the resource that is not returned (if this is the problem) with the following approach:
http://blogs.telerik.com/blogs/posts/07-03-26/debugging-asp-net-2-0-web-resources-decrypting-the-url-and-getting-the-resource-name.aspx
and this one:
http://blogs.telerik.com/aspnetmvcteam/posts/08-07-18/web-resources-demystified-part-3-troubleshooting.aspx

Generally, if the page works fine originally and then it breaks after a postback it is possible that the reason is an error in the code-behind, but if you are using AJAX the error gets trapped by the MS AJAX frameworks. What you can do in this case is to attach a debugger to the process and step through the server code to see if this is the case.

Greetings,
Marin Bratanov
the Telerik team