Action doesn't proceed when trying to woohoo with Grim Reaper

Just tried to woohoo Grim in a completely clean save which has never been modded or had CC (the option to use both has always been turned off in Game Options) and he accepts, they cheer and then nothing happens, the action disappears.  I had summoned Grim via the Grimophone, I don't know if that makes a difference?

I hope this is fixed soon; I would really like my sim to have a baby with him!