Comment 20 for bug 492810

Azraele:

Lets go through this step-by-step because I am not confident I fully understand what you have done so far.

First.. Have you issued these commands from the command line:

1)
echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list
2)
echo "deb http://ddebs.ubuntu.com $(lsb_release -cs)-updates main restricted universe multiverse
deb http://ddebs.ubuntu.com $(lsb_release -cs)-security main restricted universe multiverse
deb http://ddebs.ubuntu.com $(lsb_release -cs)-proposed main restricted universe multiverse" |
sudo tee -a /etc/apt/sources.list.d/ddebs.list
3)
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 428D7C01 5E0577F2
4)
gpg -o - --export 428D7C01 | sudo apt-key add -
5)
sudo apt-get update
6)
sudo apt-get install nautilus-dbg

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If you entered command #1 and #2 correctly then entering this command:

cat /etc/apt/sources.list.d/ddebs.list

Should provide these results:

deb http://ddebs.ubuntu.com karmic main restricted universe multiverse
deb http://ddebs.ubuntu.com karmic-updates main restricted universe multiverse
deb http://ddebs.ubuntu.com karmic-security main restricted universe multiverse
deb http://ddebs.ubuntu.com karmic-proposed main restricted universe multiverse

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If you entered command #3 correctly then you should see a message saying you imported 2 keys successfully. If you entered command #4 correctly then it should simply respond with "OK". Command #5 and #6 should complete without errors.

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Let me know if you make it this far.