This problem happened in my early game, with no EP, and disappeared later, with EP and deathfix (not sure if strictly related, but I always retain deathfix in my DL folder, just for sake). Now, it suddenly happened again.
A sim is electrocuted, all others in the lot ran to "watch distressed", and poof! Distressed sim vanishes, no Grimmy, no death (and no plead-for-loved-one, of course
), no urn, no memories: only those damned morons which immediately start congratulating each other for being born and so on.
Restoring family (with InSim) loads the electrocuted, which then disappears in the normal routine (This sim is dead on another lot blah blah blah).
I then resurrect her with InSim, re-kill her too, and this time all goes the right way: she collapses on floor, Grimmy did his show, everybody cry, her husband pleads, wins, and all went ok.
But... why this happened? Some days ago have had another death by electrocution, and all was fine. Any ideas?