Client found response content type of '', but expected 'text/xml'.\r\nThe request failed with an empty response.

Hi ,

I have a requirement to write a workflow assembly which converts an ssrs report to pdf . I tried following the two blogs below.

http://www.codeproject.com/Articles/15555/Generating-PDF-reports-programmatically-using-SQL

http://msdn.microsoft.com/en-us/library/reportexecution2005.reportexecutionservice.render.aspx

But its throwing me the following error

Client found response content type of '', but expected 'text/xml'.\r\nThe request failed with an empty response.

Any idea why this error comes.