Error while installing worlds

All the packs are checked in the launcher. Haven't touched them. Haven't touched any files outside the clean folder I made. I've made no changes beside installing 4 store worlds. And I can't check if the content is loading. At least not on any of my saves I made prior to installing these worlds as I said. It doesn't recognize the expansion packs. And again I've only touched the 4 worlds and nothing else.