Question [Q] tf300t OmniRom kitkat 4.4.2 Always Fail

I have tried every way i have found to install the OmniRom 4.4.2 onto my unlocked and rooted with custom recovery (TWRP) Asus Transformer tf300t current version 4.2.1. Is there anything stupid i could be missing?

TWRP v2.6.3.0

I always factory wipe then cache and dalvik cache wipe
then try to install any zip and they all fail.

Please help.