Paul, I have run into a couple errors recently.
Firstly, when dragging an attack roll from the chat that was accidentally not targeted at a monster, I get a script error of:Script Error: [string "scripts/manager_action_attack.lua"]:332: attempt to perform arithmetic on field 'nTarget' (a nil value)
Secondly, when dropping a weapon onto an NPC sheet, it's name is changed to *** *** until renamed. Which is odd. I do not get an error log for this, it simply occurs, but gif for reference. https://puu.sh/DQjum/ad7fc0063b.gif