My Matlab 2014a uninstallation directly gives unexpected error, what to do?

Hi,

I try to uninstall Matlab 2014a from my Windows 7 PC. The following Unknown Error occurs: The application encountered an unexpected error and needs to close. ...

The log-File Contains the following:

(Mai 11, 2015 19:13:32) java.util.concurrent.ExecutionException: java.lang.NullPointerException
  at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
  at java.util.concurrent.FutureTask.get(Unknown Source)
  at javax.swing.SwingWorker.get(Unknown Source)
  at com.mathworks.wizard.worker.WorkerImpl.done(WorkerImpl.java:33)
  at javax.swing.SwingWorker$5.run(Unknown Source)
  at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(Unknown Source)
  at sun.swing.AccumulativeRunnable.run(Unknown Source)
  at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(Unknown Source)
  at javax.swing.Timer.fireActionPerformed(Unknown Source)
  at javax.swing.Timer$DoPostEvent.run(Unknown Source)
  at java.awt.event.InvocationEvent.dispatch(Unknown Source)
  at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
  at java.awt.EventQueue.access$200(Unknown Source)
  at java.awt.EventQueue$3.run(Unknown Source)
  at java.awt.EventQueue$3.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
  at java.awt.EventQueue.dispatchEvent(Unknown Source)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
  at org.apache.lucene.index.FieldsReader.doc(FieldsReader.java:88)
  at org.apache.lucene.index.SegmentReader.document(SegmentReader.java:284)
  at org.apache.lucene.index.SegmentMerger.mergeFields(SegmentMerger.java:186)
  at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:88)
  at org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:709)
  at org.apache.lucene.index.IndexWriter.addIndexes(IndexWriter.java:575)
  at com.mathworks.install.command.doc.SearchIndexCommand.buildSearchIndex(SearchIndexCommand.java:55)
  at com.mathworks.install.command.doc.SearchIndexCommand.handleProductsFound(SearchIndexCommand.java:37)
  at com.mathworks.install.command.doc.BuildSharedDocCommand.execute(BuildSharedDocCommand.java:67)
  at com.mathworks.install.command.doc.BuildSharedDocCommand.execute(BuildSharedDocCommand.java:47)
  at com.mathworks.install.command.doc.BuildSharedDocCommand.undo(BuildSharedDocCommand.java:55)
  at com.mathworks.install.PreProductInstaller.uninstallProducts(PreProductInstaller.java:79)
  at com.mathworks.install.InstallerImpl.uninstallProducts(InstallerImpl.java:132)
  at com.mathworks.install.InstallerImpl.uninstall(InstallerImpl.java:150)
  at com.mathworks.installwizard.model.UninstallTask.execute(UninstallTask.java:38)
  at com.mathworks.installwizard.model.AbstractBackgroundTask.execute(AbstractBackgroundTask.java:38)
  at com.mathworks.installwizard.model.AbstractTask.call(AbstractTask.java:73)
  at com.mathworks.installwizard.model.AbstractTask.call(AbstractTask.java:23)
  at com.mathworks.wizard.worker.WorkerImpl.doInBackground(WorkerImpl.java:24)
  at javax.swing.SwingWorker$1.call(Unknown Source)
  at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
  at java.util.concurrent.FutureTask.run(Unknown Source)
  at javax.swing.SwingWorker.run(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

(Mai 11, 2015 19:13:32) Error: The application encountered an unexpected error and needs to close.  You may want to try re-installing your product(s).  More information can be found at C:\Users\USER\AppData\Local\Temp\mathworks_USER.log

What can I do to uninstall Matlab?

Thanks and Regards,

Philipp

[Walter Roberson]

Oddly enough, reinstalling it might help you de-install it.

Mathworks offers free installation support. I think that might extend to de-installation as well.