Tracing SOAP in and SOAP out

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I installed WSE 1.0 after reading about the new SOAP context class and the
tracing features. I want to easily enable/disable logging of
incoming/outgoing SOAP/XML. I have used the WSE tool to enable tracing. I
have made the tracing files and given permission to the ASPNET user to access
them. I am running the web service from the default web service page. The
web service completes but no SOAP/XML is logged and no errors are generated.
I then tried to cast the HTTPContext into the new SOAPContext but get a
syntax error. Any suggestions on what I may be doing wrong?
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