WowAce

What version of Grid2 are you using?

 R955

What game client version (windows or mac) and language are you using ?

 Mac, English 

What steps will reproduce the problem?

  So far its going into the starting instance for legion, the fight on the beach
Did you try having Grid2 as the only enabled addon and everything else disabled?

  I did

Was it working in a previous version? If yes, which was the last good one?

  yes, but not sure how far back as I have not run this instance in a really long time 

Do you have an error log of what happened? If you don't see any errors, make sure that error reporting is enabled (`/console scriptErrors 1`) or install

[BugSack](https://mods.curse.com/addons/wow/BugSack).

 3x Grid2\GridLayout.lua:430: attempt to index local 'layoutHeader' (a nil value)
[string "@Grid2\GridLayout.lua"]:430: in function `AddHeader'
[string "@Grid2\GridLayout.lua"]:450: in function `GenerateHeaders'
[string "@Grid2\GridLayout.lua"]:421: in function `LoadLayout'
[string "@Grid2\GridLayout.lua"]:399: in function `ReloadLayout'
[string "@Grid2\GridLayout.lua"]:240: in function `?'
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:119: in function <...Tom\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119>
[string "=[C]"]: ?
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:29: in function <...Tom\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:64: in function `SendMessage'
[string "@Grid2\GridRoster.lua"]:239: in function `?'
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:119: in function <...Tom\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119>
[string "=[C]"]: ?
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:29: in function <...Tom\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
[string "@TomTom\libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:64: in function `Fire'
[string "@TomTom\libs\AceEvent-3.0\AceEvent-3.0-4.lua"]:120: in function <...aceTomTom\libs\AceEvent-3.0\AceEvent-3.0.lua:119> 

Please provide any additional information below.