So... I don't seem to have a 'working' Grim in my game. The Grim Reaper that has been reaping my sims was moved into a house and since then anytime a sim dies Grim just stands there and does nothing.
I've saved my dynasty into another file and tried evicting Grim to see if that would fix the problem... and I've tried waiting to see if another 'working' Grim would be spawned by the game. So far I just can't get a sim reaped. In house townies are dying like normal... they just disappear from the household picture and turn up as ghosts in my sims relationship panels.
It's not a problem as I'm on gen 8 now so I don't have anymore spouses in the house that will need to be reaped but the problem arises if one of my sims is on the same lot as a dying sim (eg park etc) the only way out of the glitch is to save without quitting and go back to the last save. (In which case I'll post here for specific permission.)
So it's a really strange glitch and I can't find anything much about it on the web anywhere. I'm hoping it's just a freak bug that I've got and no one else will get as if it happens earlier in your game I think it would basically have to be a restart. Or a return to an earlier save where Grim hasn't yet been placed into a house.
As usual... I haven't got a save far back enough. Grim must have been placed into a house a few days ago and I didn't realize.