I too have had an issue where the log shows "look rotation viewing vector is zero" Playing the Steam release version of Kerbal on Windows. Playing career mode a rocket took off, orbited Kerbal, and landed back on the surface. Got pilot out for an EVA and he falls off the command module. Shortly after he hits the ground, screen goes mostly blank grey. Some of the hud contols are still there. I revert back to the space flight center, but am treated to a view of the stars and milky way. I can pan this around partially, but am unable to do anything else. The debug/cheat panel under log just scrolls: "look rotation viewing vector is zero" Checking the performance tab shows that the game is still churning away and memory is accumulating on the heap. Re-loading the saved game had no effect.
