transition.php

			if ( $controllerHasModel ) {
				$model = property_exists($c->{$controllerModel}, $modelName) ? $c->{$controllerModel}->{$modelName} : $c->{$modelName};
				if (get_class($model) == 'AppModel') {
					if (!class_exists($modelName)) {
						App::import('Model', $modelName);
					}
					if (!class_exists($modelName)) {
						return false;
					}
					$model = new $modelName();
				}
			} else {
				if (!class_exists($modelName)) {
					App::import('Model', $modelName);
				}
				if (!class_exists($modelName)) {
					return false;
				} else {
					$model = new $modelName();
				}
			}