To dream of a crack represents a flaw or imperfection in some area of your life. Once stable beliefs or relationships are beginning reveal problems. Cracks may also reflect situations that were perceived to be safe or balanced and are now unable to maintain composure or "keep it together."
Cracking in a dream may also represent you or someone else that is "cracking under pressure."
Alternatively, a crack in a dream may symbolize a possibility or weak spot in a problem you have. It may also point to a weakness in your defense.