Keypad Plus doesn't work in Phindows

The Plus key on the numeric keypad is used as a command key in a few applications, such as qed and spatch. Although I remember it working in older versions of Phindows, I have recently started using Phindows 2.12 and the Plus key always returns +, even if NumLock is off. I am running on Windows 2000 service pack 4 in case the problem originates on the dark side. Any ideas how to make this work will be greatly appreciated.