I have no idea what this means. Im not very techy at all. This stuff has been spamming my BugSack all day though. mostly while farming Naxx but there have been times in other places and have been happening both in and out of combat. Ive been using Carbonite for many years and have no intention of letting these bugs make me stop using it, just wanted to report it in case its something simply repairable.
Copied directly from BugSsck
49x Carbonite\NxMap.lua:6493: attempt to perform arithmetic on a nil value
Carbonite\NxMap.lua:6493: in function `UpdateOverlay'
Carbonite\NxMap.lua:6324: in function `UpdateZones'
Carbonite\NxMap.lua:4574: in function `Update'
Carbonite\NxMap.lua:3820: in function <Carbonite\NxMap.lua:3735>