Content Search Web Part breaks Custom Visual Web Part with UpdatePanel?

Hi all,

I'm having this error where-in any page / page layout with Content Search Web Part breaks my Custom Visual Web Part control. My Custom Control has an UpdatePanel in it, which I use to update only specific items on that control.

If I click the button trigger for that control, it performs perfectly on other pages. But if I do it on a page with a Content Search Web Part, it shows me this error:

Line: 5
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 'ebPartEditing|false|<script type='text/j'.

Does anyone know why this happens?

Thank you