Continuity mistake: When Goofy throws his horseshoe at Bradley near the end of the film, it hits him in the neck. But later when you see Bradley, he has a black eye even though the horseshoe never hit him in the eye.
Continuity mistake: When Max is skateboarding with the frisbee, there is a shot where he passes the Gammas playing volleyball in the background. In this shot, Bradley and Tank are standing on opposite sides of the net. When it cuts to a close-up, they are both on the same side.