TreeView | When customErrors are ON all errors come back as "There was an error in the callback.s[]_$$_"

[Mikhail]

We are using  Telerik.Web.UI   v. 2009.3.1208.0.

When customErrors are ON all errors come back as "There was an error in the callback.s[]_$$_"

If customErrors are turned OFF all error come back with proper messages (what was thrown from server side)

Steps to reproduce.

1) On the server side handle NodeExpand  event from the Telerik.Web.UI.RadTreeView
2) Within the method that handles the NodeExapend thrown an exception with some text "This is the error"
3) Make sure your web.config had this line  <customErrors mode="On" defaultRedirect="~/Error/ErrorPage.aspx"  redirectMode="ResponseRewrite" />
4) Click on the node and you will get an alert text box with the following text:  "There was an error in the callback.s[]_$$_"


If customErrors are turned off alert text box comes back with the right text: "This is the error.s[]_$$_" 

Please, help!

[Mikhail]

Guys,

any help on this? Seems like a bug in telerik

[Plamen]

Hi Mikhail,

 
I inspected the issue but could not reproduce the error. Would you please share that code that will help us observe the error locally?


All the best,

Plamen Zdravkov
the Telerik team