Any map I open crashes anyone that tries to join it

Any map that I specifically open crashes on the load screen. My brother also crashes when entering them. We can enter his maps fine, but any one I open crashes both of us. We are both on windows 10, so it seems unrelated to the recent update.

I'm Having this same problem. I open a map i go in and get kicked to main menu. Come back in game and port is still there.


Also a note. I cannot see any Public Parties.