Comment 8 for bug 1267564

The problem could be that name and email are not configured in git for the root login. To do it you can do following:

sudo -s
git config --global user.email "<email address hidden>"
git config --global user.name "Your Name"

Can you please check if this solves your problem?

Another problem exists with the update manager, which still fails when name and email are set for root (#1335391).