I found that this was apparently a problem (especially since I have a MacBook and I didn't know this was happening) so here's how to fix it without getting a whole other computer

Step 1 Uncompress and Open Downloaded File.

Step 2 Read the titles inside the zip file, if one of them is a _MACOSX file (this only shows when not using mac to open the files), the other folder should be the true Texture Pack.

Step 2.5 Trash the _MACOSX file if there is one (this is NOT a virus, that is just how Apple products store data)

Step 3 Take the file from Step 2 (that was next to the _MACOSX file, non mac users) and place it in your Resource/Texture Pack folder

Optional: (Trash any folder/file you find that says _MACOSX, .mcassetsroot, or .DS_Store if you want those extra kilobytes; I did not add those files, Apple did.)

for MacOS users who don't know how to zip the texture pack correctly (I was one of them) Zipping Texture Packs in MacOS (might apply to other computers)