Tharane added a post in a topic [KK] [4.4.4] CyanogenMod 11.0 [ROM] [ALL] [WEEKLY BUILDS ON FRIDAY]
just to let you know, how I fixed my" I dont have root on KK" problem.
I tried everything, wipe, reflash etc. flash ROM and Gaps at once, reboot between these steps etc.
When I was deperate I downloaded the "Superuser update fix" from the market, forced it to fix and abrakadraba , I had root.
I dont know, what went wrong.....and if it will happen again (next nightly maybe in a few hours :() but, thats the way I fixed it.