Installing FTP on asterisk now

I need to install an FTP server on Asterisk Now to enable the copying of the user.conf file to and from the asterisk server. also I need to copy the CDR file regularly and create a new one for billing purposes.

If I go to the manage pachages section and click on the ftp I get
Failed: A permanent failure has occurred: There should be exactly one top-level group.
Can anyone help