Can't select bones in weight paint

This has been driving me insane and I’m sure its probably because I’m doing something stupid :spin:.

I have a simple rig setup and when I attempt to select a bone in weight paint mode it selects the entire armature and goes into the armatures edit mode.

The mesh has the armature as its parent and modifier.

What have I done wrong as it was working fine a short time ago?

The armature has to be in pose mode. That’s something I do know about skinning.

Indeed I got it eventually. I think I tried just about everything else :confused:.

Did you make sure that the bones are parented to the mesh first?