Hi Brian,
I use version 3 under Win10 and am like you an amateur user. I only started using it last week, and have found it much easier to get my head round than almost all other 3d apps. As it's so configurable, I just wanted to expand it a bit so installed a couple of custom Ui's which give access to more features and scripts etc, but somewhere along the line a couple of features are missing - I think the custome ui designer obviously intended it that way as everything is still there. By the way what does miniSidePane.js do? It's not part of my install so assume its for Moi 4?
Ron