title: Problem with git + DiffMerge on OS X
body: <p>I have configured Sourcegear DiffMerge to be my default git merge tool using the following instructions:</p>
  
  <pre><code>git config --global diff.tool diffmerge
  git config --global difftool.diffmerge.cmd "diffmerge \"\$LOCAL\" \"\$REMOTE\""
  
  git config --global merge.tool diffmerge
  git config --global mergetool.diffmerge.cmd "diffmerge --merge --result=\"\$MERGED\"
  \"\$LOCAL\" \"\$BASE\" \"\$REMOTE\""
  git config --global mergetool.diffmerge.trustexitcode false
  </code></pre>
  
  <p>Source: <a href="http://www.andrejkoelewijn.com/wp/2010/01/08/configure-diffmerge-with-git/" rel="noreferrer">http://www.andrejkoelewijn.com/wp/2010/01/08/configure-diffmerge-with-git/</a></p>
  
  <p>However when I run <code>git mergetool</code> I get the following error:</p>
  
  <p><img src="https://i.stack.imgur.com/ZgAqI.png" alt="DiffMerge Error"></p>
  
  <p>What could be the cause of this issue?</p>