title: CKFinder Upload Permissions Issue
body: <p>Afternoon,</p>
  
  <p>I have been working with CKEditor and CKFinder for the last few days and it all worked locally. Once I put it live in all aspects it worked except when attempting to upload a .pdf file to the server via the Link -> Upload tab. </p>
  
  <p>The error that I receive is "The requested resource type is not valid". I have set the folders that it is uploading to, to 777 and I have made sure that the Resource type of Files also allows for the extensions of .pdf in config.php of CKFinder. </p>
  
  <p>This error is stopping me from completion of my project and I really am out of things to try any ideas/ work arounds would be brilliant. </p>
  
  <p>One possible solution was to use KCFinder which I was told would work but my boss said that was not an option unfortunately.</p>