Custom texture pack not working

[yoshi1334]

Hello! I've downloaded a custom texture pack and its not working? Its the 1.16 pack for java and i've installed it correctly, but none of the textures are showing and some of the vanilla blocks are now appearing as the bugged (black and pink) blocks.

[HanFox]

The Customiser just makes an Addon for the main pack, so you still need to install the main PureBDcraft pack as well.