title: What causes "Invalid advise flags" run-time error in Excel VBA?
body: <p>I have a Excel macro that generates a this error whenever it gets input of a specific format. Does anyone knows <strong>in general</strong> what an <em>advise flag</em> is OR where can I find information on this type of error? Thanks</p>
  
  <blockquote>
    <p>Runtime error -2147221503
    (80040001): Automation error, Invalid
    advise flags</p>
  </blockquote>