F:\>grails list-plugins Welcome to Grails 1.0-RC1 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: C:\develop\grails-1.0-RC1 Base Directory: F:\ Environment set to development Note: No plugin scripts found Running script C:\develop\grails-1.0-RC1\scripts\ListPlugins.groovy Error executing script ListPlugins: org/w3c/dom/DOMError java.lang.NoClassDefFoundError: org/w3c/dom/DOMError at org.apache.xerces.jaxp.DocumentBuilderImpl.<init>(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source) at groovy.xml.DOMBuilder.parse(DOMBuilder.java:67) at groovy.xml.DOMBuilder.parse(DOMBuilder.java:59) running from the commandline or cygwin results in the same Exception. Adding xml-apis.jar to the GRAILS_HOME/lib fixes this erroneous behavior.