After successfully creating AND deploying the packaged Advice app (Chapter 1) bean/interface classes, I have run into an issue when running the AdviceClient class: (I have checked the classpath and everything appears correct...I am obviously missing "something". Here is the stacktrace: java.lang.NoClassDefFoundError: com/sun/corba/se/internal/util/JDKBridge at com.sun.corba.ee.internal.core.IOR$LocalCodeBaseSingletonHolder.<clinit>(IOR.java:90) at com.sun.corba.ee.internal.core.IOR.<init>(IOR.java:238) at com.sun.corba.ee.internal.iiop.messages.LocateReplyMessage_1_2.read(LocateReplyMessage_1_2.java:137) at com.sun.corba.ee.internal.iiop.IIOPInputStream.unmarshalHeader(IIOPInputStream.java:126) at com.sun.corba.ee.internal.iiop.IIOPConnection.getResponse(IIOPConnection.java:671) at com.sun.corba.ee.internal.iiop.IIOPConnection.send(IIOPConnection.java:778) at com.sun.corba.ee.internal.corba.InitialNamingClient.locateObject(InitialNamingClient.java:786) at com.sun.corba.ee.internal.corba.InitialNamingClient.getIORUsingHostInfo(InitialNamingClient.java:597) at com.sun.corba.ee.internal.corba.InitialNamingClient.resolveCorbaloc(InitialNamingClient.java:573) at com.sun.corba.ee.internal.corba.InitialNamingClient.resolveUsingORBInitRef(InitialNamingClient.java:544) at com.sun.corba.ee.internal.corba.InitialNamingClient.cachedInitialReferences(InitialNamingClient.java:1080) at com.sun.corba.ee.internal.corba.InitialNamingClient.resolve_initial_references(InitialNamingClient.java:981) at com.sun.corba.ee.internal.corba.ORB.resolve_initial_references(ORB.java:2425) at com.sun.enterprise.naming.SerialContext.getProvider(SerialContext.java:52) at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:120) at javax.naming.InitialContext.lookup(InitialContext.java:359) at AdviceClient.go(AdviceClient.java:22) at AdviceClient.main(AdviceClient.java:14) Any ideas would be appreciated. (I tried searching the forum for the keyword = to the apparent missing classfile reported as a NoClassDefFoundError - no luck). Thanks