title: DYLD error when starting up mongodb
body: <p>I installed mongo with:</p>
  
  <pre><code>brew install mongodb
  </code></pre>
  
  <p>I created the data directory:</p>
  
  <pre><code>/data/dir
  </code></pre>
  
  <p>i included <code>mongod</code> the path (<code>which mongod --&gt; /opt/local/bin/mongod</code>):</p>
  
  <pre><code>export PATH=$PATH:/opt/local/bin/mongod
  </code></pre>
  
  <p>I tried to run <code>mongod</code>:</p>
  
  <pre><code>mongod
  </code></pre>
  
  <p>And got this response:</p>
  
  <pre><code>dyld: lazy symbol binding failed: Symbol not found: __ZN7pcrecpp2RE4InitERKSsPKNS_10RE_OptionsE
    Referenced from: /opt/local/bin/mongod
    Expected in: /opt/local/lib/libpcrecpp.0.dylib
  
  dyld: Symbol not found: __ZN7pcrecpp2RE4InitERKSsPKNS_10RE_OptionsE
    Referenced from: /opt/local/bin/mongod
    Expected in: /opt/local/lib/libpcrecpp.0.dylib
  </code></pre>
  
  <p>What is this error all about? How do I proceed?</p>