Character mistake: Candy's full name is Candace Washington, which is referred to in the movie, yet when she is released early from prison, the correction officer calls her Candace Collins.
Continuity mistake: At the first part of the movie when Candy (the prostitute) leaves the courthouse to talk to Derek, her hair moves between shots. Sometimes in front of her shoulder and sometimes behind her shoulder etc.
Revealing mistake: When Cora and Madea are driving the mini-van to go to anger management you can see that the gear shift lever is in the up or "park" position. The lever should be in the "drive" position.