March 2018
My friend has the full version and we can't seem to party together.
I would accept the invite and a small spinning circle would appear. Then an error pops up along the lines of "Something happened that shouldn't have happened. Try again". I'm stuck in the main menu with no way of getting to the lobby
I am super disappointed and frustrated as I was looking forward to playing this with my friend.
March 2018
@MayorMikeHurley Can you try disabling your antivirus and firewall and then trying again.
Let me know how you get on.