title: An internal error occurred during: "AppXray Indexing..."
body: <p>I installed Oracle WebLogic Tools for Eclipse Luna and now  I get the error in the title at startup.  I've attached the Eclipse log below.</p>
  
  <pre><code>java.lang.NullPointerException
      at org.eclipse.m2e.jdt.internal.MavenClasspathContainerInitializer.initialize(MavenClasspathContainerInitializer.java:48)
      at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2902)
      at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1937)
      at org.eclipse.jdt.core.JavaCore.getClasspathContainer(JavaCore.java:3247)
      at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2693)
      at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2857)
      at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1962)
      at org.eclipse.jdt.internal.core.JavaProject.buildStructure(JavaProject.java:464)
      at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:259)
      at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:557)
      at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java:294)
      at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java:280)
      at org.eclipse.jdt.internal.core.JavaProject.getJavaProjectElementInfo(JavaProject.java:1642)
      at org.eclipse.jdt.internal.core.JavaProject.newNameLookup(JavaProject.java:2329)
      at org.eclipse.jdt.internal.core.JavaProject.newNameLookup(JavaProject.java:2339)
      at org.eclipse.jdt.internal.core.JavaProject.findType(JavaProject.java:1357)
      at org.eclipse.jdt.internal.core.JavaProject.findType(JavaProject.java:1264)
      at oracle.eclipse.tools.webtier.jsf.AbstractJSFTechnologyDiscoverer.isActive(AbstractJSFTechnologyDiscoverer.java:68)
      at oracle.eclipse.tools.common.services.project.technology.DefaultTechnologyDiscoveryProvider.getActiveTechnologyDescriptors(DefaultTechnologyDiscoveryProvider.java:82)
      at oracle.eclipse.tools.common.services.project.technology.DefaultTechnologyDiscoveryProvider.getActiveTechnologies(DefaultTechnologyDiscoveryProvider.java:64)
      at oracle.eclipse.tools.common.services.project.internal.ProjectImpl.getTechnologyExtensions(ProjectImpl.java:75)
      at oracle.eclipse.tools.common.services.project.internal.ProjectImpl.getTechnologyExtensionById(ProjectImpl.java:96)
      at oracle.eclipse.tools.webtier.javawebapp.app.WebAppClassloaderResetCommand.execute(WebAppClassloaderResetCommand.java:45)
      at oracle.eclipse.tools.common.services.resources.internal.CommandSetJob.runPreLockCommands(CommandSetJob.java:211)
      at oracle.eclipse.tools.common.services.resources.internal.CommandSetJob.run(CommandSetJob.java:79)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
  </code></pre>