I know that, I've got the same problem. I think Alice can't set a pose (in the walk-method) and move both. But (if I remember right) It works if you program the walk-method new and intigrate the move-command or if you make a other event "let the control keys move...".

My problem is too: I want to make that the person in my game doesn't can go through walls and other objects...
I made a event with "when something is true..." and "SUBJECT is THRESHOLD in OBJECT" and made some invisible shapes to "Blockers" and place them in a "Blocker-Group", but that is really difficult. Do you know an easier method? I don't know how I can create subgroups, does anybody know that? or manipulate Subparts? How can I roll Objects in the Layout Tool? Why objects can't resize only depth, height, width?
I think Alice 2.x is better than Alice 3, because it's easier to use, but this little things are not so good. I wish me an Alice 2.3! And if Alice will be perfect, it has got his own texture and object editor.