(gedit:5302): GnomePrint-WARNING

[squareyes]

Hi all,
have a query, am still learning. This morning I wanted to print out
my sources list for use on another machine, and this below showed in the 
terminal.
Gedit still openned the file and I printed it out OK, but am wondering 
why the error
was shown.
Many thanks in advance
Take Care
Winton

squareyes at here:~$ gedit /etc/apt/sources.list
Model not found, discarding config

(gedit:5302): GnomePrint-WARNING **: Could not create filter from 
description 'f rgba': filter 'frgba' is unknown
sys:1: Warning: invalid (NULL) pointer instance
sys:1: Warning: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE 
(instanc e)' failed
squareyes at here:~$