BagIt Archive_Tar

I'm trying to find the Archive_Tar for Bag It, but the links do not work on Omeka or GitHub. Where can I find it? The plugin won't work until that's installed.

Doing pear install Archive_Tar on the command line should do the installing for you. You'll need to do that as a user with pretty high server permissions, though, so you might have to talk to your server admin or host company about doing it.