It appears the pin does not truly go low to ground, or high to 5v.
ignore the pic. I seldom use the graphical program, so I really didn't even look at the arrows!
Schematics are more important than words in describing what you are doing. So take a bunch of random words and put them in a post and then wonder why no one answers the question that is in your head.
Why does the circuit work when I put +5v or gnd on the override wire, but not when attached to the digital pin?
Swap the arrows on the pnp transistors,