At launch, I get 22 Lua errors, related to:

• "Has bad mixin: BW_UIDropDownMenuButtonMixin" x5
• "Unknown method OnMouseDown in element OnMouseDown" x5
• "Unknown method OnLeave in element OnLeave" x5
• "Unknown method OnEnter in element OnEnter" x5

And single occurrences of

• "Unknown function BetterWardrobeSetsTransmogModelRightClickDropDown_OnLoad in element OnLoad "
• "Couldn't find inherited node: BW_ColorSwatchTemplate"

I'm having the same Lua errors

Also, when opening the Transmogrifier, a Lua error appears with "attempt to index global 'BetterWardrobeOutfitDropDown' (a nil value)"

Fixed in 5.0.5

Seems not.

I made sure to update the addon. I'm using version 5.0.7.