problems weight painting the mesh

I have a character mesh that someone else had tried to rig and now I’ve been redoing it…so it would actually work right. I have the armature all setup but when I switch to weight painting…the mesh goes black and I cant paint anything, well nothing changes colors. I deleted all the vertex groups from the previous rigging but I was hoping someone could tell me what I need to delete so I can redo the weight painting.

thanks!

You will need the vertexgroups with the correct vertices assigned to for weightpainting.
You can assign vertices to the active group through painting as well but only if the vgroups button in the WeightPaintPanel is deacivated.

Pat