weight paint behaving like vertex paint

Support Animation and Rigging
#1

On a model I been working on, I had just finished the armature. Now all that is left is the weight paint. Before I continue this is a minecraft character. The weight paint is only working on the 4 vertices on each part.

Now on other models it did not appear to do this. All the models I have worked on were rather low poly aside from 1 sculpture. All of which allowed me to weight paint the same as though i was in texture mode. So whats going on?

#2

My guess is that the old model had subsurf enabled with the modifier set before the armature modifier, and the new ones don’t have a subsurf modifier or have it after the armature.