Test pre-requisites Enable Dropbox repository Enable File System repository Enable System files repository Place some files in your private files, and in your course (folder resource for instance) < 1MB file 1, 2, and 3MB files .txt and .jpg ones, even if not real ones. You can create files using this command: dd if=/dev/urandom of=NameOfFile.txt bs=1024KB count=1 _ Test #1 Use the attached file test_filemanager.php to test both the editor and the file manager. For each of the 3 repositories (dropbox, server files and upload), make sure : The maximum number of files is respected The maximum size per file is respected The global size per area is respected Using Dropbox and Server files, make sure the restriction does not apply to file references Test #2 Be destructive Navigate to your private files and try to bypass the limits Navigate to any other editor/file manager and try to be bypass the limits Known issues: The editor does not support maxfiles. Hacking the ajax request would allow files to be uploaded to the draft area, although they would not be saved when submitting the form