New user here (1 week) and as I make my way up the unfortunately steep learning curve, it is implementations like this (and there are many others I will be posting about) that make me wonder if the developer has actually ever done any 3D printing. As a professional software developer specializing in usability, I am discouraged and disappointed by S3D's apparent lack of understanding of its users. 1 hour with a group of users and a paper prototype would have made the product much more usable. I still can't figure out how to get my printer configuration to "stick" - every time I close S3D it disappears and I have to configure again.