title: xperf can't load my DLL's symbols
body: <p>I'm trying to use xperf to profile my DLL, but it refuses to use my DLL's PDB file.
  Running xperf on the .etl with -symbols, I get:</p>
  
  <pre><code>DBGHELP: mydll- private symbols &amp; lines
           C:\mydll\debugu\mydll.pdb - unmatched
  </code></pre>
  
  <p>Which leads me to believe it thinks my PDB doesn't match the DLL the application is using. This is wrong; it does match. I've confirmed the path of the DLL the application is linking with using procexp, completely rebuilt the project, and so on. It still thinks it doesn't match.</p>
  
  <p>Any ideas on what could be wrong?</p>