Not use Fix Permissions in TWRP over Kitkat & TWRP
If you will use the option "fix permissions" in kitkat (vibe OTA from russian forum) posibility you will break the root user and permissions.
In other versions maybe not be possible...in my case.
You use this program for root, unroot and restore root permissions with Kinguser client.
You must check the USB Debugging option in developer settings for use correct the executable.
Sorry if my english is unintelligible.