I have Nebula 2.1.5.0, the latest release I believe. When I go to the key mapping config screen, I can click on one the key mappings and it responds properly by asking for a keypress for the new key assignment. However, at that point the app is hardlocked and not responding, requiring a ctrl-alt-delete and an application kill. Fullscreen GUI isn't any better...basically the same thing except it crashes back to the desktop on the first click, and won't run again without a reboot. Any suggestions?