Client FTP backup error

[gjsiiger]

When a clients tries to backup their website, the following error occurs:

Warning: Failed to connect to FTP server: file does not exist or is not executable: /usr/local/psa/admin/bin/ftp_filemng2

The error messages says it all, and the binary lives in: /usr/local/psa/admin/sbin/ftp_filemng2
(sbin instead of bin)

I'm not sure where to change that setting, but it must be a bug.