I always get this error message when I get a new transmog design.

5x BetterWardrobe\Modules\Wardrobe-Vorlagen.lua:1401: attempt to index global 'inventoryTypes' (a nil value)
[string "@BetterWardrobe\Modules\Wardrobe-Vorlagen.lua"]:1401: in function OnEvent' [string "@BetterWardrobe\Modules\Core.lua"]:1398: in function ?'
[string "@Masque\Libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:119: in function <...que\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119>
[string "=[C]"]: ?
[string "@Masque\Libs\CallbackHandler-1.0\CallbackHandler-1.0-7.lua"]:29: in function <...que\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25>
[string "@Masque\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>

Fixed in the next update