title: Could not load file or assembly occurs after few days
body: <p>I took over a project recently and it's using the NopCommerence package. When I load up the package in Visual Studio, it works fine, I have no troubles in VS, when I push live, everything is fine too, all works, but as soon as a few days sometimes even hours have passed, I get this error message:</p>
  
  <pre><code>Could not load file or assembly 'NPOI, Version=2.0.6.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
  </code></pre>
  
  <p>To solve this, I have to clean, rebuild and build the project and release a new set of files, my question is why does it randomly just fall over after so much time? I tried resetting the server, deleting temporary files but no luck.</p>
  
  <p>Been doing this for weeks now and I can't find a solution.</p>