need help with J2EE sdk 1.3.1 deployment tool

[eric lee]

When i run my code, i always get this message? what's wrong when i deploy?
thanks
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C:\converter\jars>runclient -client HelloApp.ear -name HelloClient -texta
Initiating login ...
Enter Username:guest
Enter Password:guest123
Binding name:`java:comp/env/ejb/SimpleHello`
Application threw an exception:java.lang.NoClassDefFoundError: HelloHome