Getting the error message "Element cause is undefined in a Java object of type class coldfusion.xm

Hi,

     I am getting the error message

"Element cause is undefined in a Java object of type class coldfusion.xml.rpc.ServiceProxy$ServiceInvocationException"

while  calling the LoadReport() to load the report rdl file in coldfusion 10 through web service.

It is working fine when i am using the sql 2008 report server but it is giving the above error in 2005 sql server in client's staging server.

Below is the piece of code where exactly i am facing the issue:

var execInfo = webServiceObj.loadReport(javacast('string','ReportName'),javacast("null",""),trustedUserHeader);

Thanks in advance.