[2017.04.25-04.35.45:941][ 0]LogWindows:Error: Objects have the same fully qualified name but different paths.
[2017.04.25-04.35.45:941][ 0]LogWindows:Error: New Object: BoolProperty /Game/Blueprints/NewBlueprinttest.NewBlueprinttest_C.fullscreen
[2017.04.25-04.35.45:941][ 0]LogWindows:Error: Existing Object: Function /Game/Blueprints/NewBlueprinttest.NewBlueprinttest_C:fullscreen
I recommend looking into those properties to see if you have naming conflicts in NewBlueprinttest. Resolving these should resolve the crash.