title: Class not registered HRESULT 0x80040154
body: <p>I'm using the .NET framework version 6.0 on Windows Vista. I recently installed a program that displays charts. When I open it, I get an error message from the Microsoft .NET framework:</p>
  
  <blockquote>
    <p>Class not registered (exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).</p>
  </blockquote>
  
  <p>How do I fix the problem? Thanks.</p>