title: API Error Code: 100
body: <p>Just wanted to install my app to a fanpage, but got this message:</p>
  
  <p>API Error Code: 100
  API Error Description: Invalid parameter
  Error Message: redirect_uri URL is not properly formatted</p>
  
  <p>What does it mean? How can i fix this?</p>
  
  <p>Greetz</p>
  
  <p>Mark</p>