title: Puma .NET exception 'System.Runtime.InteropServices.COMException'
body: <p>Trying to recognise a set of images in a folder (using Puma .NET OCR library), the first image is recognised successfully, but after that I get an error:</p>
  
  <pre><code>An unhandled exception of type 'System.Runtime.InteropServices.COMException' 
  occurred in Puma.Net.dll
  
  Additional information: &lt;0x00000000&gt;: ?????? ???.
  </code></pre>
  
  <p>I have a special class for recognition, and the error happens on this line:</p>
  
  <pre><code>Puma.Net.PumaPage inputFile = new Puma.Net.PumaPage(imagePath);
  </code></pre>
  
  <p>I found <a href="https://pumanet.codeplex.com/discussions/221779" rel="nofollow">this link</a> and <a href="https://pumanet.codeplex.com/discussions/198669" rel="nofollow">this one</a>, but they don't seem to help in my case.</p>
  
  <p>Thank you</p>