pwgl-switch issue

Hello,
there seems to be a problem with pwgl-switch.
If invoked by double-clicking the screen and typing its name, it comes up as an empty object.
It works as expected when browsed through the object's menu [right-click->Control->pwgl-switch]

I am new to the list. Thanks for this amazing and very much needed language!

Marisio

Mac PowerPC OSX 4.11
PWGL 1.0b