In the scene where Gilbert and his buddy's are eating in the cafe. The first time you see the undertakers bowl of cereal, it keeps changing from full to empty several times.
During the scene where Darlene Cates (Mama) climbed the staircase, she climbed only the first two or three steps. This footage was reused to show her climbing the entire staircase. The room which served as her upstairs bedroom was actually a downstairs room.