[jboss-user] [JBoss Seam] - Exception when using @EJB (or JNDI to inject a session bean)

I'm in the process of porting (well, re-creating really) a web app with Seam. It's been working great except that I get an Exception when using @EJB to inject another session bean. Until now, all my session beans had worked independantly of each other so I hadn't noticed this. I have a session bean: @Stateful @Name("showMatrix") @Scope(ScopeType.SESSION) public class PlayerActionBean implements PlayerActionLocal { @In(create=true) private EntityManager entityManagerSeam; @In(required=false) PlayerPlay selectedPlayerPlay; @Out(required=false) List someList; @EJB private SomeBeanLocal someBean; @Factory("someList") public void create() { // use someBean here } ... } This worked fine until I tried injecting a session bean "someBean" with @EJB. Any ideas what could be going wrong? Stack trace: javax.ejb.EJBTransactionRolledbackException: java.lang.IllegalArgumentException: could not set field value: showMatrix.selectedPlayerPlay at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93) at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130) at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:201) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) [ ... ] at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98) at $Proxy173.replay(Unknown Source) at com.example.web.PlayerActionBean.createMatrix(PlayerActionBean.java:55) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [ ... ] 16:26:41,666 ERROR [STDERR] calProxy.java:98) at $Proxy198.createMatrix(Unknown Source) at com.example.web.PlayerActionLocal$$FastClassByCGLIB$$609ecd47.invoke() at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45) [ ... ] Caused by: java.lang.IllegalArgumentException: could not set field value: showMatrix.selectedPlayerPlay at org.jboss.seam.Component.setFieldValue(Component.java:1508) at org.jboss.seam.Component.injectFields(Component.java:1299) [ ... ] 16:26:42,151 ERROR [STDERR] tionContext.java:64) at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:79) at sun.reflect.GeneratedMethodAccessor151.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [ ... ] Caused by: java.lang.IllegalArgumentException: Could not set field value by reflection: PlayerActionBean.selectedPlayerPlay on: com.example.SlotsPlayerBean with value: class com.example.model.PlayerPlay at org.jboss.seam.util.Reflections.set(Reflections.java:75) at org.jboss.seam.Component.setFieldValue(Component.java:1504) .. 235 more Caused by: java.lang.IllegalArgumentException at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:37) at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:57) at java.lang.reflect.Field.set(Field.java:656) at org.jboss.seam.util.Reflections.set(Reflections.java:61) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3984332#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...