Upload not possible: check CKFinder configuratiebestand

Please help, I'm trying to get it to work for several hours now. In the community or documentation I can't find a solution what it might be.
I have ckeditor and ckfinder, in seperatate directories. Ckeditor is working, but ckfinder gives the subjectmessage (translated from Dutch: Upload not possible: check CKFinder configuratiebestand).

I have set the CHMOD on de Images and files etc directories on 0777

I am using PHP and have this on my page:

<?php include_once '../../ckeditor/ckeditor.php';
$ckeditor = new CKEditor('text');
$ckeditor->basePath = '../../ckeditor/';
$ckeditor->config['filebrowserBrowseUrl'] = '../../ckfinder/ckfinder.html';
$ckeditor->config['filebrowserImageBrowseUrl'] = '../../ckfinder/ckfinder.html?type=Images';
$ckeditor->config['filebrowserFlashBrowseUrl'] = '../../ckfinder/ckfinder.html?type=Flash';
$ckeditor->config['filebrowserUploadUrl'] = '../../ckfinder/core/connector/php/connector.php?command=QuickUpload&type=Files';
$ckeditor->config['filebrowserImageUploadUrl'] = '../../ckfinder/core/connector/php/connector.php?command=QuickUpload&type=Images';
$ckeditor->config['filebrowserFlashUploadUrl'] = '../../ckfinder/core/connector/php/connector.php?command=QuickUpload&type=Flash';
$ckeditor->editor('CKEditor1');?>

I really don't know what to try anymore, can anyone please give me a hint what to do?
greetings, AnjaO