title: Errors occurred during the build. Errors running builder 'Android Pre Compiler' on project 'com.xxx...'. com/android/sdklib/util/SparseArray
body: <pre><code>Errors occurred during the build.
  Errors running builder 'Android Pre Compiler' on project       'com.xxx.android.xxx'.
  com/android/sdklib/util/SparseArray
  </code></pre>
  
  <p>I get this error from today when I try to build the project. This is not only to this Android project I get this for all the projects.</p>
  
  <p>Any idea what has happened? This was working yesterday but today I can't build any project on workspace. <br>
  below is eclipse log file.</p>
  
  <pre><code>ENTRY org.eclipse.core.resources 4 75 2013-10-07 10:09:12.562
  !MESSAGE Errors occurred during the build.
  !SUBENTRY 1 com.android.ide.eclipse.adt 4 75 2013-10-07 10:09:12.562
  !MESSAGE Errors running builder 'Android Pre Compiler' on project     'com.xxx.android.xxx'.
  !STACK 0
  java.lang.NoClassDefFoundError: com/android/sdklib/util/SparseArray
  at com.android.ide.eclipse.adt.internal.resources.manager.DynamicIdMap.&lt;init&gt;(DynamicIdMap.java:29)
  at com.android.ide.eclipse.adt.internal.resources.manager.ProjectResources.&lt;init&gt;(ProjectResources.java:67)
  at com.android.ide.eclipse.adt.internal.resources.manager.ProjectResources.create(ProjectResources.java:74)
  at com.android.ide.eclipse.adt.internal.resources.manager.ResourceManager.getProjectResources(ResourceManager.java:160)
  at com.android.ide.eclipse.adt.internal.build.builders.PreCompilerBuilder.doClean(PreCompilerBuilder.java:772)
  at com.android.ide.eclipse.adt.internal.build.builders.PreCompilerBuilder.clean(PreCompilerBuilder.java:741)
  at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
  at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
  at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
  at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
  at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
  at    org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
  at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
  at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:513)
  at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:422)
  at org.eclipse.ui.internal.ide.dialogs.CleanDialog.doClean(CleanDialog.java:313)
  at org.eclipse.ui.internal.ide.dialogs.CleanDialog$1.runInWorkspace(CleanDialog.java:151)
  at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
  at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
  </code></pre>