http://docs.codehaus.org/display/GROOVY/Processing+XML+with+XQuery I downloaded mxquery0.4.1, put the mxquery.jar in the classpath, but it seems to me, that the class ch.ethz.mxquery.core.XQueryRuntime is not there anymore. Even not in another package name. So I get: startup failed, Script0: 3: unable to resolve class ch.ethz.mxquery.core.XQueryRuntime How to get this running?