External component has thrown an exception
<p>I have a ASP.NET website using C# that calls a C++ method using <code>DLLImport</code>.  Everything was working fine and suddenly I keep getting this error:</p>

<blockquote>
  <p>External component has thrown an exception. Description: An unhandled
  exception occurred during the execution of the current web request.
  Please review the stack trace for more information about the error and
  where it originated in the code.</p>
  
  <p>Exception Details: System.Runtime.InteropServices.SEHException:
  External component has thrown an exception.</p>
  
  <p>Source Error: An unhandled exception was generated during the
  execution of the current web request. Information regarding the origin
  and location of the exception can be identified using the exception
  stack trace below.</p>
</blockquote>
