title: Anyone use SvnMapper?
body: <p>First I download SvnMapper(<a href="http://svnmapper.tigris.org" rel="nofollow noreferrer">svnmapper.tigris.org</a>) and install it! 
  Then I start SvnMapper, the GUI need to input a URL of subversion, I failed in this step.<br>
  I have a local repository (means I use <code>file://</code> protocol to access the repository myself alone), So I input one of my project svn URL to SvnMapper: <code>file:///E:/myrepos/mathutil/trunk</code>, and click OK.<br>
  SvnMapper complains: Unable to open URL. </p>
  
  <p>So I guess, SvnMapper may not support file:// protocol. Then I find a project hosted in Google code (http:// protocol), and input the project repository URL to SvnMapper, SvnMapper still complain: Unable to open URL. </p>
  
  <p>What's wrong? I really need a tool like SvnMapper to show good graph representing mergeinfo. </p>