title: How do I solve this error in the installation of pydev to eclipse?
body: <pre><code>An error occurred while collecting items to be installed
  session context was:(profile=PlatformProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
  Problems downloading artifact: osgi.bundle,com.python.pydev,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile1859999621544153058.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile1859999621544153058.jar
  Problems downloading artifact: osgi.bundle,com.python.pydev.analysis,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile220918655411117184.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile220918655411117184.jar
  Problems downloading artifact: osgi.bundle,com.python.pydev.codecompletion,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile6399870224880355539.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile6399870224880355539.jar
  Problems downloading artifact: osgi.bundle,com.python.pydev.debug,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile3207588695697611376.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile3207588695697611376.jar
  Problems downloading artifact: osgi.bundle,com.python.pydev.fastparser,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile2655711214167315759.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile2655711214167315759.jar
  Problems downloading artifact: osgi.bundle,com.python.pydev.refactoring,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile3275296877605117137.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile3275296877605117137.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile3365690189453389652.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile3365690189453389652.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.ast,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile769891602874206282.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile769891602874206282.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.core,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile3839712619392898292.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile3839712619392898292.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.customizations,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile816928325933804340.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile816928325933804340.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.debug,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile5364494705520475285.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile5364494705520475285.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.django,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile7620410059700841148.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile7620410059700841148.jar
  Problems downloading artifact: org.eclipse.update.feature,org.python.pydev.feature,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile5503962215419916520.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile5503962215419916520.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.help,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile9174931602572798959.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile9174931602572798959.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.jython,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile7280412207836020651.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile7280412207836020651.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.parser,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile1668068989976575365.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile1668068989976575365.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.refactoring,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile8657662492011017259.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile8657662492011017259.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.shared_core,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile4065212375412251235.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile4065212375412251235.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.shared_interactive_console,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile2655488678408280510.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile2655488678408280510.jar
  Problems downloading artifact: osgi.bundle,org.python.pydev.shared_ui,3.0.0.201311051910.
  Error reading signed content:/tmp/signatureFile4140294747756580156.jar
  An error occurred while processing the signatures for the file: /tmp/signatureFile4140294747756580156.jar
  </code></pre>