When a home inspection is waived prior to purchasing a house, it is very difficult to win a lawsuit down the line. What happens if you discover water flowing below the floor in a newly-purchased house and you have to completely gut the basement to remove toxic mold? Who is responsible? That was the problem facing Eric Brown and his mother, Louise, after they bought a house on MacHenry St. in Forest, Ont., from Gary and Kim Cassidy in October 2011. During his first inspection of the house, Eric asked Gary if he had ever had any water problems in the basement and…