The correct command to install from Konsole is:
$ pkexec calamares -d
Not sudo or su. To run Calamares in Konsole and generate a log file in the /home/live directory open Konsole and run:
$ pkexec calamares -d | tee /home/live/calamares-installation-log.txt
For all users: This is correct command for any current version of OMLx including Cooker, Rolling, and Rock. If anyone has trouble installing OMLx read this first.