I can confirm, that installing latest stable CyanogenMod 10.2 from the link below and then installing the dualboot app via "./dualboot.sh UPDATE" works without problems.
http://download.cyanogenmod.org/?device=mako&type=stable
At first it seems to be stuck at the "Google" bootlogo but it just takes a while to start up Ubuntu Touch.
I will try again with a freshly installed stock 4.4.2 in a bit.
I can confirm, that installing latest stable CyanogenMod 10.2 from the link below and then installing the dualboot app via "./dualboot.sh UPDATE" works without problems.
http:// download. cyanogenmod. org/?device= mako&type= stable
At first it seems to be stuck at the "Google" bootlogo but it just takes a while to start up Ubuntu Touch.
I will try again with a freshly installed stock 4.4.2 in a bit.