Tux Dog's Island aired on September 29, 2011.
Problem Solverz Case #76654: The Case of the Vacation With No Problems
Tux Dog allows the PS to take a vacation on his private island. Roba and Alfe rejoice, but Horace is too much of a workaholic to stop Problem Solving. His desperate attempts to find a problem to solve on the Island bare an ugly truth about the Island. He unwittingly causes the problem in this episode by doing this.