title: SVN error “no such table: wcroot” when trying to checkout a repo
body: <p>I'm trying to do an initial checkout of a repository hosted on the network. The checkout fails with the error message "svn: E200030: no such table: wcroot". Googling does not seem to help. What does this error message mean, and what is the diagnosis?</p>
  
  <p>My SVN binary version is 1.7.1 (r1186859).</p>
  
  <p>Thanks!</p>
  
  <p>(re-posted from programmers.stackexchange, as it was closed there)</p>