java.lang.ClassNotFoundException: org.netbeans.modules.debugger.jpda.projects.StepIntoActionProvider
   at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.ClassNotFoundException: org.netbeans.modules.debugger.jpda.projects.StepIntoActionProvider starting from SystemClassLoader[265 modules] with possible defining loaders null and declared parents [org.netbeans.MainImpl$BootClassLoader@67392596, ModuleCL@27498e50[org.netbeans.api.annotations.common], ModuleCL@4e1e3a56[org.openide.awt], ModuleCL@22880c2b[org.netbeans.api.progress], ModuleCL@11d6ecc3[org.openide.dialogs], ModuleCL@3551ff5b[org.openide.nodes], ModuleCL@1a53cab6[org.openide.windows], ModuleCL@7321803a[org.netbeans.modules.editor.mimelookup], ModuleCL@1c699ae3[org.openide.text], ModuleCL@5a00feb3[org.netbeans.swing.tabcontrol], ...249 more]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
   at org.netbeans.ModuleManager$SystemClassLoader.loadClass(ModuleManager.java:713)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
   at org.netbeans.spi.debugger.ContextAwareSupport.createInstance(ContextAwareSupport.java:98)
   at org.netbeans.spi.debugger.ActionsProvider$ContextAware.getDelegate(ActionsProvider.java:218)
   at org.netbeans.spi.debugger.ActionsProvider$ContextAware.isEnabled(ActionsProvider.java:267)
   at org.netbeans.api.debugger.ActionsManager.isEnabled(ActionsManager.java:279)
   at org.netbeans.modules.debugger.ui.actions.DebuggerAction.isEnabled(DebuggerAction.java:133)
   at org.netbeans.modules.debugger.ui.actions.DebuggerAction.<init>(DebuggerAction.java:86)
   at org.netbeans.modules.debugger.ui.actions.DebuggerAction.<init>(DebuggerAction.java:79)
   at org.netbeans.modules.debugger.ui.actions.DebuggerAction.createStepIntoAction(DebuggerAction.java:236)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.core.startup.layers.BinaryFS$AttrImpl$MethodAndParams.invoke(BinaryFS.java:773)
   at org.netbeans.core.startup.layers.BinaryFS$AttrImpl.getValue(BinaryFS.java:703)
   at org.netbeans.core.startup.layers.BinaryFS$BFSBase.getAttribute(BinaryFS.java:549)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:930)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:863)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:926)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:863)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:791)
   at org.openide.loaders.InstanceDataObject$Ser.instanceCreate(InstanceDataObject.java:1394)
   at org.openide.loaders.InstanceDataObject.instanceCreate(InstanceDataObject.java:842)
   at org.openide.loaders.FolderInstance.instanceForCookie(FolderInstance.java:580)
   at org.openide.awt.Toolbar$Folder.instanceForCookie(Toolbar.java:369)
   at org.openide.loaders.FolderInstance$HoldInstance.instanceCreate(FolderInstance.java:1150)
   at org.openide.loaders.FolderInstance$1R.instances(FolderInstance.java:700)
   at org.openide.loaders.FolderInstance$1R.run(FolderInstance.java:721)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)
Caused: The service org.netbeans.modules.debugger.jpda.projects.StepIntoActionProvider not found.