PAIE 1.3.3 for Maya (maya script)

When I type in "import paie;paie.GUI()" into the Python box i get the result 
" <paie.PaieGUI instance at 0x000002226E93FE48> #  " 
and no PAIE popping up. 

It didn't used to be like this. It only started recently. Tried restarting. Using Maya 2016