New Set List often doesn't work

[devnulljp]

In Set Manager, tapping New Set List often (usually) doesn't work.
*Sometimes* it does, but more often than not nothing happens.
Am I missing something? Is there a secret to tapping that button and creating a new set list?
It *used* to work fine.

[Phil Smith]

Pressing the green plus sign always results in a new set list being created.