I have a mesh and constructed a skeleton from armatures, single bone & extruding, inside the mesh. I press CTRL+P, I click on "set parent to- with automatic weights". In every tutorial I watched this connects mesh and skeleton like magic, yet in my it does literally nothing. I move the skeleton in pose mode, nothing, only the bones move. I only found one person having the same problem as me and the question wasn't answered.
.blend file available here: https://ufile.io/304451 (apologizes for the crappy site). This is after I used automatic weights.
I also tried with really simple things like a cube scaled to be a door and a single armature. still nothing.