well… for some days now I always get this entity ‘nil’ error I already posted here when I load the game
at first two of my Hearthlings just idled out in sleeping stance as I posted here but somehow (magic I guess) I managed to free them just to find two other Hearthlings with the same problem some days later
right now none of them is stuck but behaving like I mentioned above
the poor Hearthling buried in that grave was a victim to an armed goblin on…day 3 I think…
luckily I lost none of them to freez/starvation yet and my population is at 23 Hearthlings at day 38 ^^
(aaaand I bet I just cursed my save game… 
)