title: "known root subtree copied to incorrectly-named new root path"
body: <p>What does this svn error message mean?</p>
  
  <pre><code>Commit blocked by pre-commit hook (exit code 1) with output:
  erors:
  
  ...
  
  "known root subtree copied to incorrectly-named new root path"
  </code></pre>
  
  <p>The context is that I am try to merge changes from a trunk branch to a 'feature branch'.  The error affects only files newly added to trunk, not files modified in trunk.  The 'merge' operation completed successfully. The error appears when I try to commit the working-directory changes produced by the merge.  I can commit files modified by merge, but not files added by the merge.</p>
  
  <p>I have successfully merged and committed previous changes to trunk to this branch.</p>
  
  <p>I get the same error from AnkhSVN and Tortoise SVN.</p>