Error installing Android 4.2.2
Just flash the system.img(one from 4.2.1) over your current system, also make sure you're running the corresponding recovery, radio, kernel, and bootloader that came with your takju/yakju factory image.
Do that and and try the OTA again, should work.
"Flashing system.img didn't wipe data/app"(Just backup if you are worried about losing data/app) 
NOTE:You will lose root

or else try flashing 4.2.2 manually from here