Default [Q] cyanogen rom keyboard and navigation buttons not working

I recently installed cyanogen 10.2 on my rooted Xperia z with unlocked bootloader. I installed rom and gapps, did full clean and rebooted fone. The rom works but unable to see navigation buttons and keep getting message saying unfortunately android keyboard process has stopped. Anyone know how to fix things I really wanna try out the cyanogen rom? Thank's in advance