Awhile back Rhonda did lessons on the electric quilt program, I wonder if you were to PM her if she might have an answer for you? I'm just having a quick look through my books.
I googled "how to print a stencil in electric quilt 5" and came up with this you tube video, hopefully it will help you?
https://www.youtube.com/watch?v=kip9TJm8jko