Help a newbie with FTP!

[seknd]

Noticed technical details on filemanager page and decided to look and it came up with this:

The error occured in file /var/www/ispcp/gui/tools/filemanager/includes/filesystem.inc.php on line 56.
function ftp_openconnection (/var/www/ispcp/gui/tools/filemanager/modules/browse/browse.inc.php on line 234)
function net2ftp_module_printBody (/var/www/ispcp/gui/tools/filemanager/main.inc.php on line 313)
function net2ftp (/var/www/ispcp/gui/tools/filemanager/index.php on line 61)

so if anyone knows something about these errors, all help is needed