Missing xpath method error from some classpath disaster or another

Benson Margulies <[email protected]>
Newsgroups gmane.text.xml.xalan.java.user
Message-ID <[email protected]> 
I can provoke the following by trying to use Xalan inside of a Webapp
inside of Tomcat after using the JAXP 1.4 explicit newInstance to
obtain my factory. Confused doesn't begin to describe my reaction. Can
anyone give me a clue? Or a diagnostic procedure?

java.lang.NoSuchMethodError: org.apache.xpath.XPathContext.<init>(Z)V
	org.apache.xpath.jaxp.XPathImpl.eval(XPathImpl.java:207)
	org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:281)
	org.apache.mtomcatbug.Serviette.doGet(Serviette.java:58)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
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