uploaded.to folders

Some plugins seem to fetch (resolve, enumerate) folders of links without problem.

I can't seem to fetch folders using Uploaded.to_premium plugin, even though the folder with links exist on Uploaded.

I've tried various incarnations of the link with no joy.

'http://ul.to/f/xxxxxx' (ERROR - file not found)
'http://uploaded.net/f/xxxxxx' (ERROR - no number between '>('and')' was found)
'http://uploaded.to/f/xxxxxx' (ERROR - no number between '>('and')' was found)

Is this function broken?
Is there another way to make the plugin work with folders?