1615x NeatPlatesHub\functions\Text.lua:136: invalid option in format' [C]: in function format'
NeatPlatesHub\functions\Text.lua:136: in function <NeatPlatesHub\functions\Text.lua:128>
NeatPlatesHub\functions\Text.lua:140: in function <NeatPlatesHub\functions\Text.lua:139>
(tail call): ?
(tail call): ?
NeatPlates\NeatPlatesCore.lua:1080: in function <NeatPlates\NeatPlatesCore.lua:1067>
NeatPlates\NeatPlatesCore.lua:550: in function <NeatPlates\NeatPlatesCore.lua:525>
NeatPlates\NeatPlatesCore.lua:672: in function <NeatPlates\NeatPlatesCore.lua:667>
NeatPlates\NeatPlatesCore.lua:1486: in function `?'
NeatPlates\NeatPlatesCore.lua:1378: in function <NeatPlates\NeatPlatesCore.lua:1376>

Locals:
InCombatSkipped

Could you check what your Health Percent Precision under Healthbar View > Additional Settings is set to. Or simply try changing it from whatever value it has right now to something else.

Because the only reason I can see for this specific error message is if the precision variable is set to something like '$'.

@Luxocracy you are amazing!
For some reason it was set to "-1" (don't know why) which of course will lead to an error. Changing it to a positive value fixed the errors.

Weird, I'll have to look into constraining the values better I guess.