WSE2.0 DIME Attachments

Question

It looks like I am reaching a 4 meg filesize limitation transferring a soap attachment. Everything I read says that there is no limit. The error I am getting looks like this: An unhandled exception of type 'Microsoft.Web.Services2.Dime.DimeFormatException' occurred in microsoft.web.services2.dll Additional information: WSE352: The size of the record uri:c8873491-29f1-4a06-82c6-c7fbf8605619 exceed its limit. my code looks like this: [WebMethod(BufferResponse=false)] [SoapHeader("Token", Direction=SoapHeaderDirection.In)] public string getLatest(int pTreeId) { string filePath = @"c:\bigfile.txt"; SoapContext context = ResponseSoapContext.Current; string retUri = ""; DimeAttachment da = new DimeAttachment("image/jpeg", TypeFormat.MediaType, filePath); da.Id = "uri:" + Guid.NewGuid().ToString(); context.Attachments.Add(da); return retUri; // retUri; } Everything seemed to work ok in WSE 1.0, but I had problems with my Custom SoapHeader. In some other forums I saw that I could change my machine.config. I tried this, restarted IIS, but still seem to have a 4 meg limit. I would appreciate any help! Thanks c