Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Tablet PC 2.0)
Timestamp: Sat, 13 Dec 2008 01:03:15 UTC
Message: 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 ' <!DOCTYPE html PUBL'.
[Latest November 2008 toolkit, VS 2008 .Net 3.5 SP1, using the RADGrid Inside Update Panel. Page has toolkitscript manager (Microsoft Control)]
The older RadGrid control (1 year old) had not such issues, but was slower