I am using an ajax tabcontainer control with several tabpanels that contain cms repeater controls to list content articles. The non-active tabpanels are loaded "on demand" when the user clicks on the tab to keep the page load size down.

Works great in Firefox, but IE 7 throws the following cllient side error.

Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near' 1468|updatePanel|plcRoot_'.

There is a lot out there about correcting/avoiding this issue. My question is the correct way to resolve this with Kentico CMS.

Most references seem to always come back to this page.

http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-and-how-to-avoid-it.aspx

I might also add that the "on demand" loading is triggered by a hidden button within an update panel in the tabpanel. If I move the button outside of the update panel, I do not receive the error, but it causes a full postback which ruins the point of using ajax.

Any thoughts or suggestions?