Hi carlo, firstly great job with EJB 3.1 Embeddable prototype, and today I took a little time to try a simple example in eclipse and maven, but with suprise the test case run well throught the maven command "mvn test" and the same example does not work with testing on eclipse "Run As -> JUnit Test". May be you can give some tipps, how I can run the test case on eclipse. Thanks. I followed the maven pom installation step as on the jboss wiki site: http://wiki.jboss.org/wiki/EJB31Embeddable 1) here is the test case public class HelloBeanTest { private static final Logger log = Logger.getLogger(HelloBeanTest.class); private static String getBaseURLToResource( String resource ) { URL url = Thread.currentThread().getContextClassLoader().getResource(resource); String s = url.toString(); return s.substring(0, s.length() - resource.length()); } @Test public void test1() throws NamingException { log.info("Test #1"); Properties properties = new Properties(); // Not according to spec! properties.setProperty(EJBContainer.EMBEDDABLE_MODULES_PROPERTY, getBaseURLToResource("org/ormsys/ejb3/HelloBean.class")); EJBContainer container = EJBContainer.createEJBContainer(properties); // Note that global naming isn't working yet. InitialContext ctx = new InitialContext(); Hello bean = (Hello)ctx.lookup("HelloBean/local"); String now = new Date().toString(); String actual = bean.sayHello(now); assertEquals("Hello " + now, actual); container.close(); } } 2) Here is the error trace java.lang.NoSuchFieldError: factoryFinder at org.jboss.virtual.VFS.init(VFS.java:71) at org.jboss.virtual.VFS.(VFS.java:51) at org.jboss.ejb3.embedded.JBossEJBContainer.deployMain(JBossEJBContainer.java:140) at org.jboss.ejb3.embedded.JBossEJBContainer.deployMain(JBossEJBContainer.java:134) at org.jboss.ejb3.embedded.JBossEJBContainer.(JBossEJBContainer.java:88) at org.jboss.ejb3.embedded.JBossEJBContainerProvider.createEJBContainer(JBossEJBContainerProvider.java:56) at javax.ejb.EJBContainer.createEJBContainer(EJBContainer.java:99) at org.ormsys.ejb3.HelloBeanTest.test1(HelloBeanTest.java:36) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59) at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42) at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88) at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51) at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37) at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)