Getting a 400 (bad request) error when using Sitefinity Mess

Hi,

For some reason I cannot get the following to work:

- UserControl with a RadGrid.
- RadGrid has 2 RadButtons inside a GridTemplateColumn
- RadAjaxManager is on the page, but only ajaxifies an action from a RadCombobox to the RadGrid.
- Using a Sitefinity Message control (Telerik.Sitefinity.Web.UI) to show some notifications.

When I set up the page like this, I'm getting an error when clicking one of the RadButtons inside the RadGrid. These button execute server-side code: Response.Redirect()

When removing the Sitefinity Message control OR set EnableAjax to false, the buttons work. Otherwise the buttons actions screw up the redirect url by showing me a HtmlEncoded URL which doesn't work.

Any ideas on why this isn't working?

Thanks,
Daniel