Players are unable to join a host with Marketplace content applied. This includes Marketplace Worlds, Addons, Mashup Packs & Texture Packs too high in size est: ~25MBs. This LOCKS the world from multiplayer and no one is able to join. The download process hangs about half way, then disconnects the user joining the session. (Note: This has been tested from multiple platforms and Internet connections and the issue still persists.)

Steps to reproduce this issue:

1. Create a new world.
2. Apply Marketplace content to the world, ex: Actions and Stuff resource pack, Realistic Biomes addon, etc.
3. Invite another user to the World.