Hi, I've just gone from Orion1.0 to 1.1.37 and before in my application/orion directory there were all the wrapper classes that Orion uses. Now with 1.1.37 these class files don't exist. So I get an error message when I use one feature of my application (the rest of the application works ok): java.rmi.UnmarshalException: Error deserializing return-value: Address_EntityBea nWrapper6; nested exception is: java.lang.ClassNotFoundException: Address_EntityBeanWrapper6 java.lang.ClassNotFoundException: Address_EntityBeanWrapper6 at java.io.ObjectInputStream.readObject(ObjectInputStream.java, Compiled Code) at java.lang.Exception.<init>(Exception.java, Compiled Code) at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java, Compiled Code) at java.io.ObjectInputStream.readObject(ObjectInputStream.java, Compiled Code) at java.io.ObjectInputStream.inputArray(ObjectInputStream.java:951) at java.io.ObjectInputStream.readObject(ObjectInputStream.java, Compiled Code) at java.io.ObjectInputStream.readObject(ObjectInputStream.java, Compiled Code) at com.evermind.server.rmi.a8.gi(JAX, Compiled Code) at com.evermind.server.rmi.bb.ht(JAX, Compiled Code) at com.evermind.server.rmi.bb.run(JAX, Compiled Code) at java.lang.Thread.run(Thread.java:479) With Orion 1.0 I don't get this error because my classpath pointed to the application/orion directory. Where are the wrapper classes kept with 1.1.37? Regards, Robert Hargreaves