I have to agree with @Tezmo. I really like Cura and have been using it as my main slicer since I entered the world of 3D-printing. Right now I'm running 15.04.6 and it works good, although I would love to migrate to the newer versions. I've heard so many good things about Cura 2.3 and forward so I decided to give it a try. Although, based on how I use my printer, and I know many others do as well, there is no good way to use the newer versions, and it's all because it's lacking one simple feature - Manual Control. In the old version it was called "Pronterface UI" and it showed up in the print window as you pressed print. This feature allowed me to control axes, send Gcode, preheat my bed and also helped if I needed to swap filament quickly. Without this feature there is no way I will use the newer versions. So, please, bring back Manual Control in some fashion. It needs to have basic axis control, option to send manual Gcode, fan speed control and heat control. Thanks for making great software.