Editor Crashing

The editor was recompiling my project or reloading it and crashed. I have tried rebuilding everything but it keeps crashing Im using 4.7. What do I do to rebuild the project so I can continue to develop without having to start over.

Never mind it was a problem in my waypoint class. I am working on a patrol AI that will use Waypoints derived from actors much like the twitch video from Unreal. However im having an issue as to how to Have a next waypoint without using the class as a variable.