Some texture packs won't let other people join you're world when you invite them in my case it's the texture pack Actions and Stuff.

I've tried to play Actions and Stuff with multiple different friends for the past months since it's been released. When a friend accepts my invitation to the world they say they dont get the option to install a pack only a blank box where the installation percentage should be, then they get the “connection lost to host" screen. This also happens with some other packs.