Walk designer should work. The "3D path palette" was the thing removed. The walk path is still in the program. You should layout your path IF you are going to use it. Once you open up the Walk Designer you should load the character that you are going to apply the walk to. That way the program can match then length of the limbs to make it work better.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13