BSA Unpacker gives me an error for the textures archive
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BSAopt is completely useless as it automatically assumes I want to extract the entire BSA and has no "deselect everything" option.

Any alternatives?

BSAopt can unpack as well though it's slightly confusing, keep trying, and I'll look into exactly how to do so later tonight when I'm at home.

I figured BSAopt, it is a very poor interface.

Thank you.

To extract only some thing in BSAOpt, start by checking the "Show recursive" checkbox, then hit the X beside it. That will unselect everything.Then click on the tree of items at the top and find the particular item or groups you want. Use the green check to mark everything currently showing or click on individual items.