In step 2 I have selected all unused files. After choosing "go to step 3, move selected files" nothing is happening. No backup directory is created and all the selected files are still in my folders. I already changed the file permission of the uploads folder and all the files and folders in it to 777, but that doesn't make any differences.
Can you please let me know how to solve this? According to the plugin I have more than 2000 unused files so it would be great to remove those!
Thanks in advance,
Marjolein
http://wordpress.org/extend/plugins/wordpress-uploaded-files-cleaner/