Ubuntu 17.10 now uses Wayland as it's default compositor. The Eclipse version that serves as the framework for Storyboard Designer has some issues with Wayland. There are rendering issues when Storyboard Designer first comes up, and it will crash fairly quickly after starting with a "No more handles" error. To work around this, start Ubuntu with the Ubuntu Xorg configuration. To launch this configuration, click your username. Select the gear icon that is displayed below the password box, and then select "Ubuntu xorg". This will start the UI without using Wayland.