Just installed the 1.7.13.0.6 patch and I'm still encountering the same glitch on the quest: Contract: Kill Ennodius Papius so this glitch has still not been addressed. The game won't register that Ennodius Papius has died. Have tried reloading from multiple earlier saves and killing in different ways. Also tried the soul trap suggestions that I have seen in other posts, but the game won't register the kill on this character/quest. So pretty much I'm stuck from being able to continue the remaining dark brotherhood quests that I need to get the last 2 trophies 'Bound Until Death' and 'Hail Sithis!' Which is all I'm missing for platinum.
If anyone has any found a solution or has any information from Bethesda about this glitch being addressed let me know.

svcks to hear suggestions to start a new character and spend hours building up a character without assurance that I won't encounter this same situation on the new game save.