java.lang.ClassNotFoundException: Will not load class org.jdesktop.layout.GroupLayout$Group arbitrarily from one of ModuleCL@5551abb8[org.netbeans.libs.ppawtlayout] and ModuleCL@20fd55cc[org.jdesktop.layout] starting from SystemClassLoader[658 modules]; see http://wiki.netbeans.org/DevFaqModuleCCE
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:244)
   at org.netbeans.ModuleManager$SystemClassLoader.loadClass(ModuleManager.java:582)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
   at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:123)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group
   at java.lang.Class.forName0(Class.java:0)
   at java.lang.Class.forName(Class.java:264)
   at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:101)
   at org.netbeans.modules.form.MetaComponentCreator$5.run(MetaComponentCreator.java:1329)
   at org.netbeans.modules.form.FormLAF$2.run(FormLAF.java:286)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1361)
   at org.openide.util.Mutex.readAccess(Mutex.java:320)
   at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:269)
   at org.netbeans.modules.form.MetaComponentCreator.prepareClass(MetaComponentCreator.java:1325)
   at org.netbeans.modules.form.MetaComponentCreator.createComponent(MetaComponentCreator.java:138)
   at org.netbeans.modules.form.MetaComponentCreator.createComponent(MetaComponentCreator.java:130)
   at org.netbeans.modules.form.CopySupport$ClassPaste.doPaste(CopySupport.java:589)
   at org.netbeans.modules.form.CopySupport$ClassPaste.run(CopySupport.java:579)
   at org.netbeans.modules.form.CopySupport$ClassPaste.run(CopySupport.java:539)
   at org.openide.util.Mutex$1AWTWorker.run(Mutex.java:1377)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:241)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:701)
   at java.awt.EventQueue.access$000(EventQueue.java:102)
   at java.awt.EventQueue$3.run(EventQueue.java:662)
   at java.awt.EventQueue$3.run(EventQueue.java:660)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:671)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)