title: "Error while loading manipulator"
body: <p>I'm continually getting the following error under Eclipse Galileo while trying to install the WTP Web Page Editor plugin:</p>
  
  <pre><code>java.lang.IllegalStateException: Error while loading manipulator.
  at org.eclipse.equinox.internal.p2.touchpoint.eclipse.LazyManipulator.loadDelegate(LazyManipulator.java:54)
  at org.eclipse.equinox.internal.p2.touchpoint.eclipse.LazyManipulator.getConfigData(LazyManipulator.java:108)
  at org.eclipse.equinox.internal.p2.touchpoint.eclipse.actions.InstallBundleAction.installBundle(InstallBundleAction.java:76)
  at org.eclipse.equinox.internal.p2.touchpoint.eclipse.actions.InstallBundleAction.execute(InstallBundleAction.java:29)
  at org.eclipse.equinox.internal.p2.engine.ParameterizedProvisioningAction.execute(ParameterizedProvisioningAction.java:35)
  at org.eclipse.equinox.internal.provisional.p2.engine.Phase.mainPerform(Phase.java:129)
  at org.eclipse.equinox.internal.provisional.p2.engine.Phase.perform(Phase.java:72)
  at org.eclipse.equinox.internal.provisional.p2.engine.PhaseSet.perform(PhaseSet.java:44)
  at org.eclipse.equinox.internal.provisional.p2.engine.Engine.perform(Engine.java:54)
  at org.eclipse.equinox.internal.provisional.p2.ui.operations.ProvisioningUtil.performProvisioningPlan(ProvisioningUtil.java:389)
  at org.eclipse.equinox.internal.provisional.p2.ui.operations.ProfileModificationOperation.doExecute(ProfileModificationOperation.java:61)
  at org.eclipse.equinox.internal.provisional.p2.ui.operations.ProvisioningOperation.execute(ProvisioningOperation.java:37)
  at org.eclipse.equinox.internal.provisional.p2.ui.ProvisioningOperationRunner$1.run(ProvisioningOperationRunner.java:94)
  at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
  </code></pre>
  
  <p>One blog said Eclipse Galileo doesn't play well with Java 1.6 (what??), so I've tried running Eclipse with Java 1.5 but that hasn't helped. Has anyone else had this problem and been able to get around it?</p>
  
  <hr>
  
  <p><strong>Edit</strong> BTW, below the error in the error log it also says</p>
  
  <p><code>session context was:(profile=epp.package.java, phase=org.eclipse.equinox.internal.provisional.p2.engine.phases.Install, operand=null --&gt; [R]javax.mail 1.4.0.v200905040518, action=org.eclipse.equinox.internal.p2.touchpoint.eclipse.actions.InstallBundleAction).</code></p>