title: Subclipse error message "Expected format '3' of repository; found format '5'"
body: <p>I installed subclipse in eclipse, but I get an error message "Expected format '3' of repository; found format '5'" when I try to open a repository.</p>
  
  <p>Here is the sequence of steps that leads to the error message.</p>
  
  <p>Select "Window -> Open Perspective -> SNV Repository Exploring" from the Eclipse main menu.</p>
  
  <p>Right click on the "SVN Repository" tab.  Select "New -> Repository Location..." from the pop-up menu. The "Add SVN Repository" panel appears.</p>
  
  <p>Enter "file:///Users/caylespandon/svn/MyProject" in the "Url" field. Click on the "Finish" buton.</p>
  
  <p>A panel with the following error message appears:</p>
  
  <pre>
  Unable to Validate
  Error validating location: "org.tigris.subversion.javahl.ClientException:
  Couldn't open a repository
  svn: Unable to open an ra_local session to URL
  svn: Unable to open repository 'file:///Users/caylespandon/svn/MyProject'
  Unsupported repository version
  svn: Expected format '3' of repository; found format '5'
  "
  </pre>
  
  <p>Note that I can access the same repository from the command line just fine:</p>
  
  <pre>
  ~> svn checkout file:///Users/caylespandon/svn/MyProject
  A   MyProject/trunk
  A   MyProject/trunk/Jamrules
  A   MyProject/trunk/.project
  A   MyProject/trunk/setenv
  [...]
  </pre>
  
  <p>Here is the version information:</p>
  
  <p>Eclipse: version 3.4.0 build id I20080617-2000 </p>
  
  <p>Subclipse version: 1.2.0 </p>
  
  <p>SVN version: 1.4.4 (r25188) </p>
  
  <p>Running on a Mac: OS X version 10.5.4</p>
  
  <p>PS -- If your answer involves switching from file to svn+ssh, please explain why and how to convert an existing repository from file to svn+ssh without losing any history.</p>