Here are some potential problems encountered and contingency plans: - Actress not available on the first scheduled day of filming - Contingency plan was to reschedule that scene for another day when the actress was available. - Bad weather prevented filming on other scheduled days - Contingency plan was to reschedule those scenes for another time when the weather was better. - Could not find extras for college scene as planned - Contingency plan was to use a homeless person as an extra, which actually helped tell the story in an unexpected way. - Equipment issues like cameras or lights not working properly - Contingency plan would be to have backup equipment available or know how to troubleshoot issues on set. -