Root for 4.4.2 now exists. New ioroot25 was recently released.
Please try this method http://forum.xda-developers.com/showthread.php?p=57877974
It still failed.
I've replaced the Update Script as in that post.
Anything else I can do?
Sorry, D801. TWRP 184.108.40.206.
also, the 0104 zip passed the MD5 checksum.
0101 has installed fine. For now I restored my backup.