I play on a lan world my girlfriend runs with my brother and her. We have never had any issues whatsoever, my computer is top notch and only a year old. Earlier we all got that java update through the minecraft launcher, and when trying to get on her world after, we could not get in at all. wed get a joining world screen, followed by an error message. She can run it perfectly however. this is affecting both of us trying to join. Please help