Erro Java - java.lang.NoClassDefFoundError:

Estou tendo esse erro quando tento executar a aplicação no NetBeans

Exception in thread “AWT-EventQueue-0” java.lang.NoClassDefFoundError: class/ListaDistribuicao (wrong name: br/com/pcontrol/model/ListaDistribuicao)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.hibernate.internal.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.ejb.packaging.NativeScanner.getClassesInJar(NativeScanner.java:136)
at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(Ejb3Configuration.java:487)
at org.hibernate.ejb.Ejb3Configuration.addMetadataFromScan(Ejb3Configuration.java:477)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:363)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:58)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
at br.com.pcontrol.util.EntityManagerUtil.getEntityManager(EntityManagerUtil.java:23)
at br.com.pcontrol.dao.GenericDao.(GenericDao.java:34)
at br.com.pcontrol.dao.UsuarioDao.(UsuarioDao.java:22)
at br.com.pcontrol.gui.JFrmLogin.carregaUsuarios(JFrmLogin.java:76)
at br.com.pcontrol.gui.JFrmLogin.(JFrmLogin.java:62)
at br.com.pcontrol.gui.JFrmLogin$8.run(JFrmLogin.java:379)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Essa classe ListaDistribuicao está no pacote, ela não tem ligação com nehuma outra classe, já tentei remover, renomear, limpo e constro a aplicação no NetBeans, mas sempre aparece esse erro, alguém ajuda aí por favor ? vlw

Tente remover a pasta onde estão .class (que é o seu código .java compilado).