Request Tracing failed for WebServices -- help required

Question

Hi All, I have been trying to run the samples provided by Microsoft for Logging Application Block. I executed some samples fine with out any problem. But i was unable to execute WebServiceRequestTracingSample succesfully. I am not getting any compilation error. But still when i tried to debug it is throwing the exception as "Request Tracing Failed". I tried to debug and found that In the RequestTraceWebService.asmx.cs file the following statement is returning null. RequestContext context = (RequestContext)CallContext.GetData(FilterConstants.CallContextSlotName); The set statement for the CallContext that is there in InputFilter.cs is not getting executed at all. CallContext.SetData(FilterConstants.CallContextSlotName, context); I have followed all the steps given in the manual as usual. Actually the reference followed in the sample is Microsoft.Web.Service.dll. but i have only Microsoft.web.Services2.dll in my system. So i have changed the reference and made necessary changes in the config file and others. It is all minor changes i have made .. just adding 2 where ever necessary. If any one had already faced the same problem or any one has any idea on this please help me out where iam going wrong. Thanks In Advance.... Regards, Mahi