I am installing KSP for the first time on a Mac running El Capitain. The program has been loading now for over 5 hours. It’s not hung, so I am reluctant to shut it down, but this can’t be right. The progress bar looks about 45% complete and it says “Loading Asset Bundle Definitions.” Every few seconds, the screen image changes and I see an encouraging new message (Flying Sage, Adding More Stuts, Terminating Debris, etc). What should I do?