E4302 error

With one TOC per flavor, the file names cannot tell the targeted flavors apart. The client looks for <Name>_<GameSuffix>.toc, then <Name>_<FamilySuffix>.toc (_Mainline or _Classic), then <Name>.toc. wowlua gives each flavor a suffix its clients recognize; when two flavors of the same family would both need the family suffix, their clients would load the same file.

Use the single TOC layout, or drop one of the flavors. With the flavor table that ships with this wowlua, the error cannot happen yet: at most one flavor per family lacks a game suffix all its clients know. It has no example here.