G4P GUI Builder, I am getting an error!

[kll]

this is the latest news i found,

G4P Library / GUI builder: Set default font for all GUI elements in one go?

In 4.3.1 (latest version) the user can specify the global font face, style and size for display (buttons, labels etc.), input (textfield, textarea and password fields) and slider (values displayed in slider controls) The methods can be found in the G4P class and have the patteren G4P.set?????Font(String face, int style, int size) If using GUI Builder 4.3 these methods must be called in setup before the call to createGUI to have effect. In GUI Builder 4.4 (to be released) these will be chan…

if you tested that ( combination) GUI 4.3 with G4P 4.3.1

why you avoid naming it with the exact version number??