I downloaded JBoss 3.0 beta from http://sourceforge.net, and tried to deploy the .ear which works well with JBoss 3.0 alpha. It contains around 70 entity beans, which use local access. Alpha version works well, beta couldn't deploy so much entities and throws an exception while deploing:
00:55:21,942 ERROR [MainDeployer] could not deploy :file:/C:/jboss-3.0.0beta/tmp/deploy/66.Beans.jar
java.lang.NoClassDefFoundError: $Proxy2
at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.reflect.Proxy.newProxyInstance(Unknown Source)
at org.jboss.system.ServiceController.getServiceProxy(ServiceController.java:613)
at org.jboss.system.ServiceController.create(ServiceController.java:244)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1628)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:78)
at $Proxy1.create(Unknown Source)
at org.jboss.ejb.Application.create(Application.java:230)
at org.jboss.ejb.EJBDeployer.deploy(EJBDeployer.java:433)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:458)
at org.jboss.deployment.MainDeployer.deploySubPackages(MainDeployer.java:793)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:453)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:413)
at org.jboss.deployment.MainDeployer.scan(MainDeployer.java:272)
at org.jboss.deployment.MainDeployer.startService(MainDeployer.java:218)
at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:160)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

If anybody can help, I would appreciate it.