[Tails-dev] 1.2.1 broken for install/upgrade?

Hi,

I was unable to upgrade a current Tails disk to 1.2.1. I find that
this isn't so interesting but upon burning the ISO to a DVD, I found
that the tails installer (liveusb-creator-launcher) after boot did not
work to upgrade or install onto a fresh USB disk. I reported this as a
bug with Whisperback, of course.

Is anyone else experiencing this issue?

All the best,
Jacob