I've had them since the early versions of version 5.
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:184 BetterWardrobeContextMenuFrameButton: Has bad mixin: BW_UIDropDownMenuButtonMixin
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:141 Frame BetterWardrobeContextMenuFrameButton: Unknown method OnEnter in element OnEnter
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:142 Frame BetterWardrobeContextMenuFrameButton: Unknown method OnLeave in element OnLeave
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:143 Frame BetterWardrobeContextMenuFrameButton: Unknown method OnMouseDown in element OnMouseDown
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:46 Couldn't find inherited node: BW_ColorSwatchTemplate
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:184 BetterWardrobeModelRightClickDropDownButton: Has bad mixin: BW_UIDropDownMenuButtonMixin
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:141 Frame BetterWardrobeModelRightClickDropDownButton: Unknown method OnEnter in element OnEnter
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:142 Frame BetterWardrobeModelRightClickDropDownButton: Unknown method OnLeave in element OnLeave
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:143 Frame BetterWardrobeModelRightClickDropDownButton: Unknown method OnMouseDown in element OnMouseDown
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:184 BetterWardrobeCollectionFrameButton: Has bad mixin: BW_UIDropDownMenuButtonMixin
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:141 Frame BetterWardrobeCollectionFrameButton: Unknown method OnEnter in element OnEnter
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:142 Frame BetterWardrobeCollectionFrameButton: Unknown method OnLeave in element OnLeave
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:143 Frame BetterWardrobeCollectionFrameButton: Unknown method OnMouseDown in element OnMouseDown
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:184 BetterWardrobeSetsTransmogModelRightClickDropDownButton: Has bad mixin: BW_UIDropDownMenuButtonMixin
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:141 Frame BetterWardrobeSetsTransmogModelRightClickDropDownButton: Unknown method OnEnter in element OnEnter
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:142 Frame BetterWardrobeSetsTransmogModelRightClickDropDownButton: Unknown method OnLeave in element OnLeave
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:143 Frame BetterWardrobeSetsTransmogModelRightClickDropDownButton: Unknown method OnMouseDown in element OnMouseDown
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:184 BW_TransmogOptionsDropDownButton: Has bad mixin: BW_UIDropDownMenuButtonMixin
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:141 Frame BW_TransmogOptionsDropDownButton: Unknown method OnEnter in element OnEnter
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:142 Frame BW_TransmogOptionsDropDownButton: Unknown method OnLeave in element OnLeave
Interface/AddOns/BetterWardrobe/Libs/UIDropDownMenu/UIDropDownMenuTemplates.xml:143 Frame BW_TransmogOptionsDropDownButton: Unknown method OnMouseDown in element OnMouseDown
Interface/AddOns/BetterWardrobe/Modules/Wardrobe.xml:1565 Frame BetterWardrobeSetsTransmogModelRightClickDropDown: Unknown function BetterWardrobeSetsTransmogModelRightClickDropDown_OnLoad in element OnLoad
I've had them since the early versions of version 5.
I hope it helps. Thanks