Can't download any packs or bundles

i’ve tried both building the game from source and installing the prebuilt versions from both github and the official site, but no matter what i try, i cannot download any packs. whenever i try to install a pack, i get an error in the terminal saying “Couldn’t open Cache/Downloads/*insert pack here*: couldn’t find end of central directory record”, and it doesn’t load any songs.

it helps to know what packs and how you tried to install. usually this means either you got a 404 or you have no permission to create files in your install directory