Excel Export with Telerik Problem ( Details: Error parsing near '<style> .textmode { '. )

Microsoft JScript runtime 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 '<style> .textmode { '.

Solved:

imgAuditExport is Excel export image button