title: Eclipse: java.lang.RuntimeException: Application “org.eclipse.ui.ide.workbench” could not be found in the registry
body: <p>Iam using helios eclipse (eclipse-SDK-3.6.1-win32).<br>
  I update this <code>Helps &gt; Check of updates</code>
  I have updated completely by checking all. (Most of them was plugin related to android)<br>
  After completion of updates, it asked me to restart eclipse. After that, when ever i start eclipse it shows error. It shows the following dialog </p>
  
  <pre><code>An error has occurred. See the log file
  D:\eclipse-SDK-3.6.1-win32\eclipse\configuration\11003434.log.
  </code></pre>
  
  <p>That log is </p>
  
  <pre><code>!SESSION 2011-05-11 12:06:34.453 -----------------------------------------------
  eclipse.buildId=M20110210-1200
  java.version=1.6.0_24
  java.vendor=Sun Microsystems Inc.
  BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
  Command-line arguments:  -os win32 -ws win32 -arch x86
  
  !ENTRY org.eclipse.osgi 2 0 2011-05-11 12:06:36.593
  !MESSAGE One or more bundles are not resolved because the following root constraints are not resolved:
  !SUBENTRY 1 org.eclipse.osgi 2 0 2011-05-11 12:06:36.593
  
  
  !ENTRY org.eclipse.osgi 4 0 2011-05-11 12:06:36.687
  !MESSAGE Application error
  !STACK 1
  java.lang.RuntimeException: Application "org.eclipse.ui.ide.workbench" could not be found in the registry. The applications available are: org.eclipse.equinox.app.error, org.eclipse.equinox.p2.director.app.application, org.eclipse.equinox.p2.director, org.eclipse.equinox.p2.garbagecollector.application, org.eclipse.equinox.p2.publisher.InstallPublisher, org.eclipse.equinox.p2.publisher.EclipseGenerator, org.eclipse.equinox.p2.publisher.ProductPublisher, org.eclipse.equinox.p2.publisher.FeaturesAndBundlesPublisher, org.eclipse.equinox.p2.repository.repo2runnable, org.eclipse.equinox.p2.repository.metadataverifier, org.eclipse.equinox.p2.artifact.repository.mirrorApplication, org.eclipse.equinox.p2.metadata.repository.mirrorApplication, org.eclipse.equinox.p2.updatesite.UpdateSitePublisher, org.eclipse.equinox.p2.publisher.UpdateSitePublisher, org.eclipse.equinox.p2.publisher.CategoryPublisher, org.eclipse.pde.junit.runtime.uitestapplication, org.eclipse.pde.junit.runtime.legacytestapplication, org.eclipse.pde.junit.runtime.coretestapplication, org.eclipse.pde.junit.runtime.coretestapplicationnonmain, org.eclipse.pde.junit.runtime.nonuithreadtestapplication, org.eclipse.update.core.standaloneUpdate, org.eclipse.update.core.siteOptimizer, org.eclipse.ant.core.antRunner, org.eclipse.equinox.p2.metadata.generator.EclipseGenerator, org.eclipse.equinox.p2.reconciler.application, org.eclipse.help.base.infocenterApplication, org.eclipse.help.base.helpApplication, org.eclipse.help.base.indexTool, org.eclipse.jdt.apt.core.aptBuild, org.eclipse.jdt.core.JavaCodeFormatter, org.eclipse.pde.build.Build.
      at org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:248)
      at org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationLauncher.java:29)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
  </code></pre>
  
  <p>I didn't understand anything.<br>
  Can anyone help me in this.<br>
  I'm really stuck</p>