question about using reportservice2010.asmx

hi,

I have a vs2010 application where I have defined a  reportviewer and I point to an existing report on a server.  I am referring to this report as a remote report and I have set up parameters inside the application that I want to pass onto the server report.  When I get to the line that defines the parameters, however, I get the message that ' remote report processing requires microsoft sql server 2008 reporting services or later.. and the exeption details are: Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection+SoapVersionMismatchException: Remote report processing requires Microsoft SQL Server 2008 Reporting Services or later.

this is the code that I have - am I doing something obviously wrong?   I have read a lot about using the reportservice2010.asmx , but I still don't know what's wrong.

 serverReport.ReportServerUrl =
                new Uri("http://rptsrv2/ReportServer/reportservice2010.asmx?");
      serverReport.ReportPath = @"/samReports/Rpttester.rdl";
 serverReport.ReportPath = "/samReports";   

   ReportViewer4.ServerReport.SetParameters(new ReportParameter[]{datestart,dateEnd,firstName,lastName});
             

It blows up on the line where I am using 'SetParameters'.    I also tried using reportservice2005.asmx, but that didn't work either. 

I have the reportviewer defined in the designer of my project, is that correct?  Or, am I supposed to build a reportviewer on the fly?

I got a little further, but now I am getting this error:s not valid. The full path must be less than 260 characters long; other restrictions apply. If the report server is in native mode, the path must start with slash. (rsInvalidItemPath). 

I have searched on this error but so far, I haven't been able to resolve this problem.  I'm not sure what it really means. Anybody?

Ok, I'm baffled.  I removed the reference to reportserver2010.asmx and I can get my report.