For everyone, the correct install order is: KB2919442 KB2919442-1 KB2919355 (this MSU includes the previous leak) and, if possible: KB2932046 WZOR recommends a reboot after every MSU!
I already had 16610 installed so I'm just installing Windows8.1-KB2919442-1-x64 (10Mb) and Windows8.1-KB2932046-x64 (86 Mb). I hope it works!
Still at work for another two hours. If someone would be so kind, please try and test it against the KMS6 Emulators?