Salva raga come da titolo sono passsato dall'IDE Eclipse a Netbean per diversi problemi avuti con eclipse sul fronte EJB. In netbean sembrano essere risolti però ho un problema quanto faccio il check out di un progetto da cvs. In pratica ho il seguente errore:

codice:
java.lang.NullPointerException
        at org.netbeans.modules.project.ant.ProjectLibraryProvider.calculate(ProjectLibraryProvider.java:449)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider.access$000(ProjectLibraryProvider.java:99)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider$LP.(ProjectLibraryProvider.java:224)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider.getLibraries(ProjectLibraryProvider.java:295)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider.remove(ProjectLibraryProvider.java:337)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider.remove(ProjectLibraryProvider.java:98)
        at org.netbeans.modules.project.libraries.LibraryAccessor.remove0(LibraryAccessor.java:90)
        at org.netbeans.modules.project.libraries.LibraryAccessor.remove(LibraryAccessor.java:87)
        at org.netbeans.api.project.libraries.LibraryManager.removeLibrary(LibraryManager.java:342)
        at org.netbeans.modules.j2ee.common.SharabilityUtility$1.run(SharabilityUtility.java:316)
        at org.openide.util.Mutex.writeAccess(Mutex.java:469)
        at org.netbeans.modules.j2ee.common.SharabilityUtility.makeSureProjectHasCopyLibsLibrary(SharabilityUtility.java:295)
        at org.netbeans.modules.j2ee.earproject.EarProject$ProjectOpenedHookImpl.updateProject(EarProject.java:517)
        at org.netbeans.modules.j2ee.earproject.EarProject$ProjectOpenedHookImpl.access$800(EarProject.java:413)
        at org.netbeans.modules.j2ee.earproject.EarProject$ProjectOpenedHookImpl$1$1.run(EarProject.java:441)
        at org.openide.util.Mutex.writeAccess(Mutex.java:469)
        at org.netbeans.modules.j2ee.earproject.EarProject$ProjectOpenedHookImpl$1.run(EarProject.java:439)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:120)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:509)
        at org.netbeans.modules.j2ee.earproject.EarProject$ProjectOpenedHookImpl.projectOpened(EarProject.java:437)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:81)
        at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectOpened(UILookupMergerSupport.java:193)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:81)
        at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1059)
        at org.netbeans.modules.project.ui.OpenProjectList.doOpenProject(OpenProjectList.java:1110)
        at org.netbeans.modules.project.ui.OpenProjectList.doOpen(OpenProjectList.java:663)
        at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:576)
        at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:512)
        at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:508)
        at org.netbeans.modules.project.ui.OpenProjectsTrampolineImpl.openAPI(OpenProjectsTrampolineImpl.java:72)
        at org.netbeans.api.project.ui.OpenProjects.open(OpenProjects.java:169)
        at org.netbeans.modules.versioning.util.projects.ProjectOpener.openProject(ProjectOpener.java:160)
        at org.netbeans.modules.versioning.util.projects.ProjectOpener.selectAndOpenProjects(ProjectOpener.java:204)
        at org.netbeans.modules.versioning.util.projects.ProjectOpener.actionPerformed(ProjectOpener.java:149)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
        at java.awt.Component.processMouseEvent(Component.java:6038)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at java.awt.Component.processEvent(Component.java:5803)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3986)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
        at java.awt.Dialog$1.run(Dialog.java:1039)
        at java.awt.Dialog$3.run(Dialog.java:1091)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.awt.Dialog.show(Dialog.java:1089)
        at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:985)
        at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1019)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1007)
        at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:115)
        at org.openide.util.Mutex.doEventAccess(Mutex.java:1355)
        at org.openide.util.Mutex.readAccess(Mutex.java:268)
        at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:992)
        at java.awt.Component.show(Component.java:1419)
        at java.awt.Component.setVisible(Component.java:1372)
        at java.awt.Window.setVisible(Window.java:801)
        at java.awt.Dialog.setVisible(Dialog.java:979)
        at org.netbeans.modules.versioning.util.projects.ProjectOpener$1.run(ProjectOpener.java:138)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

Premetto che il progetto creato da netbean ha l'opzione use dedicated folder for storing libraries attiva.
All'atto pratico non trovo più le librerie usate dal progetto.

Soluzioni ?