Error message=don't know how to fix please help

There is an error on line 46 of the file "/etc/apt/sources.list". Probably a typo: "deb" -> "dep".

Edit the file to correct it or send us the result of this command:

    cat /etc/apt/sources.list

Note: to edit sources.list you need to type in a terminal (applications-->accessories):

sudo gedit /etc/apt/sources.list

(If using Kubuntu replace gedit with kate, and if Xubuntu gedit with mousepad.)

Have you fixed your problem yet?

Please mark this question as "solved" if you do.

Sorry about takeing so long to reply.Had a very bad cold that had me down for ever Sorry! I have tried your tips and nothing has worked. But now the error message is ' Error: Opening the catche (E:Tupe'O::deb' is not known on line 45 in source list /etc/apt/sources.list, E: The list of sources could not be read.)' If you can help please do. "Thinks"

Could you please attach or paste your /etc/apt/sources.list, so we can see what's wrong?

You can try replacing everything that you find in this file with the following lines:

deb http://archive.ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse

Those are for the main archive with all the components enabled (universe -- not supported by canonical and multiverse -- software without a fully open source licence (adobe reader, sun's java vm etc.)), all updates are enabled also including proposed and backports. That's something i guess most use, but you may want to remove the two last lines or skip the universe and multiverse entries in all of them.

You may also need to bring back some lines for third party repositories, which you've added before.

If you decide to replace the contents of sources.list, please, make a copy of your current file. Alternatively you can comment out (put a hash '#' at the beginning of) every line and then add those five lines, or at least comment out the offending line number 45.