Cannot Mega Evolve in 1.1.6

[Stephanie Pappas]

If I push 'z' to mega evolve, nothing happens. If I push 'shift + z', nothing happens. I made sure to change my controls so there could be no conflicting commands with the buttons, but that doesn't seem to affect it. Absolutely none of my pokemon can mega evolve.

[Casper Lu]

Where are you up to in the game? I you haven't finished the 1.0 storyline, you can't mega evolve.

[Stephanie Pappas]

I finished the current storyline, have the mega ring, and have mega stones equipped to my pokemon, who are both deltas (charizard and scizor). They do not mega evolve, despite this.