Last night, I was building an SSTO. I was ready to fly for the first time, so I click the launch button, but nothing happened. I tryed to exit, same thing. Tried to load another craft, no luck here. Every button in the upper right hand menu of the SPH wasn't working. I opened the Debug window and BOOM Null refernce exceptions for evey time I clicked those buttons. Here's the output log And the (suspected) offending exceptions Screenshot of my GameData folder I would have put this in the support thread, but i'm not sure if it's a stock bug or something mod related.