Error in VS2010

[Vitaly]

Hi guys,
I converted my web apps from VS2005 to VS2010 and I login fine and then when I am entering  serching criteria and click submit button I am getting error:
Error: Object doesn't support this property or method

Or when I click button to redirect to another page I am getting different error:
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 '�'.

Thanks,

[Andrey]

Hello,

You could check this help topic for more information about the errors you are receiving. Additionally,  please note that there are some differences between the .NET 3.5 and .NET 4.0 methods. You could check the MSDN documentation for both versions of the method that is throwing the exception and verify that there are no differences.

If the solutions in the provided help topic are not helpful, post the full exception messages including the call stack and the code that is pointed out by them.

All the best,
Andrey
the Telerik team