Page Request Manager Parser Error Exception Occurs

Environment

Product

Progress® Telerik® UI for ASP.NET AJAX AjaxManager

Progress® Telerik® UI for ASP.NET AJAX AjaxPanel

Description

A Sys.WebForms.PageRequestManagerParserErrorException occurs.

Cause

A possible cause for this error is the usage of the AjaxPanel and AjaxManager to AJAX-enable the same control at the same time.

Solution

To solve this issue, refer to the article on using controls wrapped in an AjaxPanel and added to the AjaxManager settings.