An other TBs unable to use Corkscrew Blow?

To put it simply, I can't use CSB on my TB. I can charge it, but when I let go of the button, the charge disappears and absolutely nothing happens. Tapping it does nothing, either.

I tried switching the key its bound to, trying it with a different weapon, changing channels, changing maps, re-logging, restarting Maple...no dice.

Also, the "Mark name and HP" function no longer works for me. Anyone got that problem, too?