title: 'System.IO.FileNotFoundException' occurred in mscorlib.dll
body: <p>I've got a C# Application which I'm using to convert .txt files to .xlsx. While doing the conversion I am getting an error thrown &quot;An unhandled exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll&quot;</p>
  <ol start="2">
  <li>Windows 10 64 Bit</li>
  <li>Microsoft Office 365</li>
  </ol>
  <p>The application was fully functional prior to updates pushed to the PC. Previous issues have been old registry keys and missing drivers.</p>
  <p>I can't find much on this specific error, any ideas?</p>