Post #1733: 
SoulStinger:
Do you know of this issue and can you reproduce it?
What code do you use? This one?
bpy.ops.pme.popup_area(area='CURRENT')
It works for me. What area you want to popup?
SoulStinger:
I think this set of menus and popups I create right now is helping me so much with the grease pencil and a 2d animation workflow that I thought about selling it for a reasonable price.
As I understand the stuff I create in PME cannot be sold as it always needs the plugin and I’m not sure about the licensing at the moment haha.
Could you suggest me a solution?
You can hire an add-on developer (here for example). But the best option is to create an add-on by yourself. In this case you and your addon won’t depend on anything and anybody.
Blender has a couple built-in pie menu add-ons (3D Viewport Pie Menus, UI Pie Menu Oficial). Just copy one of them and try to create your own step by step.