I am creating a filter for one of the appenders and I am getting this error: Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/janino/ScriptEvaluator at ch.qos.logback.core.boolex.JaninoEventEvaluatorBase.start(JaninoEventEvaluatorBase.java:57) at ch.qos.logback.core.joran.action.NestedComplexPropertyIA.end(NestedComplexPropertyIA.java:167) at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:318) at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:197) at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:183) at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62) at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:147) at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:133) at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:96) at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:73) at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:65) at ch.qos.logback.classic.net.SimpleSocketServer.configureLC(SimpleSocketServer.java:169) at ch.qos.logback.classic.net.SimpleSocketServer.main(SimpleSocketServer.java:67) Caused by: java.lang.ClassNotFoundException: org.codehaus.janino.ScriptEvaluator at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 13 more I have attempted to look around and cannot find the class anywhere in the .jar files shipped with the product. Anyone know where it is? ________________________________ This e-mail may contain Sprint Nextel proprietary information intended for the sole use of the recipient(s). Any use by others is prohibited. If you are not the intended recipient, please contact the sender and delete all copies of the message.