Weight painting seems to be ignored on my rig I'm trying to animate my character model using Rigify, but moving one foot will always bring the other foot with it.  I was following this tutorial.

My Blender project file can be found here.  As you can see in the project, the feet are weight painted, and I set the FK/IK to 1.0, as shown in the video.  What am I missing here?
Found 2 issues here :


First, you forgot to apply the mirror modifier.
Second, you can see that it is not the "foot" weight that influences the other side, but the "toe" weight (and this is a side-effect of the mirror modifier I guess) :




So make sure to apply the mirror modifier before parenting the armature, then try again. You'll be able to tweak the weight painting more efficiently.

And a side note, you'd better to pull up the Armature modifier before the Subsurf modifier (you'll get better performance while moving the rig, so the animation will be less painful;)