I have still the problem - the Win 8.1 Update 1, grace to SCFix.exe+SCFix.zip, DISM.exe, and countless repetitions - does not complete during the reboot. The great success though is that the KB2919355 completes install - but fails during reboot.
I started with SCF.exe /scannow and got errors that SCF could not fix. Than SCFix.exe reported one error in the CNBJ2530.dpb and fixed it. Tried to instal KB2919355 - failed on reboot - previously it was failing before it got to reboot.
Of course I installed KB2919442 and run clearcompressionflag.exe in that order - but still no completion of KB2919355.
I rerun again the SCFix.exe which reported this time 5 errors and reported correcting 1 of them with the CNBJ2530.dpb fix for 6.3.9600.16384. But scanning with SCF.exe /scannow reports no errors.
Enclosed are CBS.log, dism.log, SCFix.txt