If Im right, the new 4.4 KitKat by [NUT] can now be found here:
http://forum.xda-developers.com/xper...0-230-t2761629

Correct me, if Im wrong. Will try his new one now.

edit:
After Installation: everythings works perfect.
Sony Xperia Z (C6603), Android 4.4.2 (10.5.A.0.230) root, Provider: telekom DE