I've installed your plugin and I'm having this problem.
Whenever I try to upload a file it seems that the plugin doesn't manage to upload it on the ftp (The file appears in the list).
When I try to access it I receive this message
The requested URL /cluj/2013/wp-content/uploads/user_uploads/marius_m/file.pdf was not found on this server.
I've tried to change the upload directory too, but no luck.
Can you help me with this problem?