Web service operation "xx" with parameters {} could not be found.

[wrighterb]

The Error.
Web service operation "getThisQuery" with parameters {} could not be found.

First my cfc

<cfcomponent>

<cffunction access="remote"
name="getThisQuery"
output="false"
returntype="query"
displayname="getThisQuery"
hint="Return Users">

<cfquery name="result" datasource="generic">
SELECT *
FROM [firstnames]
</cfquery>

<cfreturn result>
</cffunction>
</cfcomponent>

Now I am trying to invoke it to get all the names.

<cfinvoke
method="getThisQuery"
returnvariable="result"
webservice="

http://www.wrighter.com/cfca/xmlserv/users.cfc?wsdl">

</cfinvoke>

<cfdump var="#result#">

Can anybody help? What am I doing wrong?