How to access a web service with overloaded methods

I'm trying to have overloaded methods in a web service but I am getting a System.InvalidOperationException when attempting "Add Web Reference" in Visual Studio 2005 (here's the relevant snippets of code): ``` public class FileService : System.Web.Services.WebService { private static readonly MetaData[] EmptyMetaData = new MetaData[0]; public FileService() { // a few innocent lines of constructor code here... } [WebMethod(MessageName = "UploadFileBasic", Description = "Upload a file with no metadata properties")] public string UploadFile(string trimURL , byte[] incomingArray , string fileName , string TrimRecordTypeName) { return UploadFile(trimURL , incomingArray , fileName , TrimRecordTypeName , EmptyMetaData); } [WebMethod(MessageName = "UploadFile", Description = "Upload a file with an array of metadata properties (Name/Value pairs)")] public string UploadFile( string trimURL , byte[] incomingArray , string FileName , string TrimRecordTypeName , MetaData[] metaDataArray) { // body of UploadFile function here ``` I thought supplying a different MessageName property on the WebMethod attribute would fix this problem but here is the entire error message I get: Both System.String UploadFileBasic(System.String, Byte[], System.String, System.String) and System.String UploadFile(System.String, Byte[], System.String, System.String) use the message name 'UploadFileBasic'. Use the MessageName property of the WebMethod custom attribute to specify unique message names for the methods. The web service compiles OK; I cannot see what is wrong here.