Don't talk to me about texturing, I have a problem with my stealth mod and recreated the problem here using the currently selected texture. The guy starts behind a door, I'm trying to get him to move once the door is activated but I just can't get him to move!!!
However, since the Gman can't reach the second path_corner, he'll just stop. He won't try to reach that point once he can do, this path_corner thing just doesn't work anymore.
So, instead of doing it this way, you'll need to use a scripted_sequence, with Move to Position set to Walk. Leave the animation options blank as it's only about the moving.