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There seems to be a programming error in aptdaemon, the software that allows you to install/remove software and to perform other package management related tasks.

Please report this error at and retry.

What do I have to do to fix it?

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What were you doing when the error appeared? Do you have the last updates? Are you using 12.10, 12.04 or which version? Please, we need more information! – Addison Montgomery Oct 25 '12 at 18:08

I have had this problem in the past and I have seen positive results from the following commands.

sudo apt-get clean
sudo apt-get autoremove

and then the command below which I have read was all that was needed for some people.

sudo apt-get install


Ubuntu Forum

Bug Report

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after doing that bapi@ubuntu:~$ sudo apt-get clean bapi@ubuntu:~$ sudo apt-get autoremove Reading package lists... Done Building dependency tree Reading state information... Done E: The package ttf-mscorefonts-installer needs to be reinstalled, but I can't find an archive for it. now what? – Manub Oct 25 '12 at 18:21
Didi you try sudo apt-get install ? what was the response? – CoalaWeb Oct 25 '12 at 18:41

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