Trectadactyl the answer is simple: if you don't own install the DLC files somehow then the game cannot load the DLC files. For that either buy the DLC on Steam or follow the T6 DLC guide. If you don't have a menu with subfolder etc. then you either tweaked something or you're running a rather old version of qBittorrent.
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Trectadactyl
@Trectadactyl