Thanks for your bugreport. This bug is fixed in the current version of update-manager (0.56) software-properties-gtk (0.52).
Cheers, michale ** Changed in: update-manager (Ubuntu) Status: Unconfirmed => Fix Released -- [apport] software-properties crashed with TypeError in __init__() https://launchpad.net/bugs/83914 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs