Comment 92 for bug 1418706

I've experienced this problem as well on Ubuntu MATE 16.04.2 LTS, but managed to resolve it.

This issue seems to be related somehow to the existing partition table of the drive: even after manually creating a new GPT table in gparted (or KDE partition manager) I got stuck at this message, but if I created a new partition table for the blank drive inside "something else" the message did not show up (dispite the fact that it also creates a GPT table if I'm correct). I assume that's why the default install method worked for everybody here - this step must be included in that one as well.

Reproduced this three times (error and resolution as well). Hope this helps somehow to the devs.