When an attempt to install the WAP plugin is made (or if this was successful then when an attempt is made to enable the plugin), it generates a system error. The error in the logs is: 2008-09-24 12:02:46,890 ERROR [http-8085-Processor4] [com.atlassian.plugin.DefaultPluginManager] enablePluginModules There was an error loading the descriptor 'WAP Actions' of plugin 'net.customware.confluence.plugin.wap'. Disabling. – url: /admin/plugins.action | userName: jennifer.cheung | action: plugins java.lang.NoClassDefFoundError: com/atlassian/confluence/core/actions/NotFoundAction at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.lang.ClassLoader.defineClass(ClassLoader.java:465) at com.atlassian.plugin.classloader.PluginClassLoader.loadClassFromPlugin(PluginClassLoader.java:213) at com.atlassian.plugin.classloader.PluginClassLoader.loadClass(PluginClassLoader.java:129) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at com.atlassian.plugin.classloader.PluginsClassLoader.loadClassFromPlugins(PluginsClassLoader.java:116) at com.atlassian.plugin.classloader.PluginsClassLoader.findClass(PluginsClassLoader.java:83) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at com.atlassian.plugin.classloader.DelegationClassLoader.loadClass(DelegationClassLoader.java:34) at com.atlassian.confluence.plugin.ConfluencePluginObjectFactory.getClassInstance(ConfluencePluginObjectFactory.java:26) at com.opensymphony.xwork.ObjectFactory.buildBean(ObjectFactory.java:95) at com.opensymphony.xwork.ObjectFactory.buildAction(ObjectFactory.java:77) .... continues