title: E155021 Unsupported working copy format
body: <p>I recently switched from NetBeans 6.7.1 to 7.3.1 (from a Windows 7 system to another Windows 8). In 6.7.1 I used the CLI client from Collabnet to access the SVN repository, in 7.3.1 it is the included SvnKit of NetBeans itself.</p>
  
  <p>When I tried to commit a file, I received an error:</p>
  
  <pre><code>svn: E155004: Working copy 'C:\Users\user1\Documents\NetBeansProjects\project1\_admin' locked
  </code></pre>
  
  <p>I then tried to cleanup the working copy, but got another error:</p>
  
  <pre><code>svn: E155021: Unsupported working copy format
  </code></pre>
  
  <p>In the NetBeans FAQ I read, that the inbuilt SvnKit supports different SVN formats from 1.5 onwards, thus NetBeans should support the old CLI client's format, but didn't.
  I already tried to newly checkout the _admin directory of the repository but this didn't help either.</p>
  
  <p>Can anyone help?</p>