Was there a chest or something blocking your path? Because sometimes it will generate a path too narrow to walk, but then there will be another path you can take around to get to the exit. The only thing that might block your path is if it puts a chest or something in your way. Are you certain there was not another way around?
 "Randomly Generated Labyrinth"){kind=icon}
 "The Enchanted Cave 2"){kind=icon}
 "Swords & Potions"){kind=icon}
Was there a chest or something blocking your path? Because sometimes it will generate a path too narrow to walk, but then there will be another path you can take around to get to the exit. The only thing that might block your path is if it puts a chest or something in your way. Are you certain there was not another way around?