title: Cannot start Netbeans 8.0.1 after JAX-RPC Web Services plugin installation
body: <p>I have a problem with Netbeans. I have installed the JAX-RPC Web Services from <a href="http://deadlock.netbeans.org/hudson/job/nbms-and-javadoc/lastStableBuild/artifact/nbbuild/nbms/updates.xml.gz" rel="noreferrer">http://deadlock.netbeans.org/hudson/job/nbms-and-javadoc/lastStableBuild/artifact/nbbuild/nbms/updates.xml.gz</a></p>
  
  <p>But, after restart the IDE when the plugin is installed, Netbeans don't start newly.</p>
  
  <p>The message log of Netbeans shows the following text:</p>
  
  <pre><code>&gt;Log Session: Wednesday, December 3, 2014 10:36:59 AM CST
  &gt;System Info: 
    Product Version         = NetBeans IDE 7.4 (Build nbms-and-javadoc-2405-on-20141202) (#6523d6792981)
    Operating System        = Windows 8 version 6.2 running on amd64
    Java; VM; Vendor        = 1.7.0_67; Java HotSpot(TM) 64-Bit Server VM 24.65-b04; Oracle Corporation
    Runtime                 = Java(TM) SE Runtime Environment 1.7.0_67-b01
    Java Home               = C:\Program Files\Java\jdk1.7.0_67\jre
    System Locale; Encoding = es_SV (nb); Cp1252
    Home Directory          = C:\Users\Ghost
    Current Directory       = C:\Program Files\NetBeans 7.4
    User Directory          = C:\Users\Ghost\AppData\Roaming\NetBeans\7.4
    Cache Directory         = C:\Users\Ghost\AppData\Local\NetBeans\Cache\7.4
  
  -------------------------------------------------------------------------------
  INFO [org.openide.util.lookup.MetaInfServicesLookup]: Cannot create class org.netbeans.core.startup.NbRepository
  java.lang.NoSuchMethodError: org.netbeans.core.startup.layers.SystemFileSystem.setHidden(Z)V
      at org.netbeans.core.startup.layers.SystemFileSystem.&lt;init&gt;(SystemFileSystem.java:121)
      at org.netbeans.core.startup.layers.SystemFileSystem.create(SystemFileSystem.java:257)
      at org.netbeans.core.startup.layers.SessionManager.create(SessionManager.java:99)
      at org.netbeans.core.startup.NbRepository.createDefaultFileSystem(NbRepository.java:155)
      at org.netbeans.core.startup.NbRepository.&lt;init&gt;(NbRepository.java:79)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
      at java.lang.Class.newInstance(Class.java:374)
      at org.openide.util.lookup.implspi.SharedClassObjectBridge.newInstance(SharedClassObjectBridge.java:64)
  [catch] at org.openide.util.lookup.MetaInfServicesLookup$Item.getInstance(MetaInfServicesLookup.java:516)
      at org.openide.util.lookup.AbstractLookup.lookup(AbstractLookup.java:422)
      at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:222)
      at org.openide.filesystems.Repository.getDefault(Repository.java:362)
      at org.openide.filesystems.FileUtil.getConfigFile(FileUtil.java:2109)
      at org.openide.filesystems.FileUtil.getConfigRoot(FileUtil.java:2139)
      at org.netbeans.core.startup.Main.getModuleSystem(Main.java:170)
      at org.netbeans.core.startup.Main.getModuleSystem(Main.java:150)
      at org.netbeans.core.startup.Main.start(Main.java:307)
      at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)
      at java.lang.Thread.run(Thread.java:745)
  java.lang.ClassCastException: org.openide.filesystems.Repository$MainFS cannot be cast to org.netbeans.core.startup.layers.SystemFileSystem
      at org.netbeans.core.startup.layers.ModuleLayeredFileSystem.getUserModuleLayer(ModuleLayeredFileSystem.java:219)
      at org.netbeans.core.startup.NbInstaller.loadLayers(NbInstaller.java:580)
      at org.netbeans.core.startup.NbInstaller.loadImpl(NbInstaller.java:356)
      at org.netbeans.core.startup.NbInstaller.access$000(NbInstaller.java:105)
      at org.netbeans.core.startup.NbInstaller$1.run(NbInstaller.java:346)
      at org.openide.filesystems.FileUtil$2.run(FileUtil.java:444)
      at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127)
      at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:499)
      at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:428)
      at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:448)
      at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:343)
      at org.netbeans.ModuleManager.enable(ModuleManager.java:1194)
      at org.netbeans.ModuleManager.enable(ModuleManager.java:1017)
      at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:340)
      at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:276)
      at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:301)
      at org.netbeans.core.startup.Main.getModuleSystem(Main.java:181)
      at org.netbeans.core.startup.Main.getModuleSystem(Main.java:150)
      at org.netbeans.core.startup.Main.start(Main.java:307)
      at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)
      at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>Anyone know how to solve this error?
  I need to use this plugin because it requires a project that I have been assigned at work.</p>
  
  <p>Thanks.</p>