I've tested this plugin on another of my websites without a problem- everything works fine.
But on another when I try to upload a file it looks like it is working but it does not upload the file.
The only difference as far as I can tell is that on the site it is not working is I have renamed the wp-content folder.
So basically I can organize folders but I can't upload files.
Please could you suggest what might be stopping it working if it is not that?