NoClassDefFoundError in Jboss with maven EJB plugin when using SNAPSHOT dependencies

Context: Jboss 5.1.0, maven 2.x, snapshot dependencies.
Problem: I got this exception after deployed my ear in jboss 5.1.

EAR name: myEAR.ear
ejb component: services.jar

Jboss classloader cannot find the myPackage/MyInterface.class when this is a SNAPSHOT dependency of my services.jar.

Solution: Correct configuration of the maven ejb plugin.
You need to set to false the useUniqueVersion attribute.

org.apache.maven.plugins maven-ejb-plugin 3.0 true false Exception stack-trace:

er.MBeanServerImpl@52f97d27[ defaultDomain='jboss' ]
2013-09-13 14:22:03,699 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (main) Error installing to PostClassLoader: name=vfszip:/usr/local/jboss-5.1.0.GA-jdk/server/standard/deploy/myEAR.ear/ state=ClassLoader mode=Manual requiredState=PostClassLoader
org.jboss.deployers.spi.DeploymentException: Error during deploy: vfszip:/usr/local/jboss-5.1.0.GA-jdk/server/standard/deploy/myEAR.ear/services.jar/
        at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49)
        at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:177)
        at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)
        at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
        at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
        at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
        at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
        at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
        at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
        at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)
        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
        at org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)
        at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)
        at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
        at org.jboss.Main.boot(Main.java:221)
        at org.jboss.Main$1.run(Main.java:556)
        at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.NoClassDefFoundError: myPackage/MyInterface
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
        at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:63)
        at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:572)
        at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:532)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:530)
        at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:507)
        at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:134)
        at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:131)