Comment 11 for bug 1311396

I verified ubuntu-release-upgrader 1:0.220.3 from trusty-proposed with Indonesian and the same crash occurs.

# apt-cache policy ubuntu-release-upgrader-gtk
ubuntu-release-upgrader-gtk:
  Terpasang: 1:0.220.3
  Kandidat: 1:0.220.3
  Tabel versi:
 *** 1:0.220.3 0
        500 http://fr.archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1:0.220.2 0
        500 http://fr.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
root@ubuntu:~# /usr/lib/ubuntu-release-upgrader/check-new-release-gtk -d
Traceback (most recent call last):
  File "/usr/lib/ubuntu-release-upgrader/check-new-release-gtk", line 113, in new_dist_available
    self.window_main.set_title(_("Ubuntu %(version)s Upgrade Available") % {'version': new_dist.version})
ValueError: unsupported format character 'T' (0x54) at index 33