Debuging Sample projects with source problem

[anonymous_user_c91f08fc]

I have build the project named VehicleGame ( from official store) with engine source code in VS2015.
When I run it, I got message:

and then programm crashes at check:

void UCollisionProfile::LoadProfileConfig(bool bForceInit)
{
...
	UEnum* Enum = FindObject<UEnum>(ANY_PACKAGE, TEXT("ECollisionChannel"), true);
	// we need this Enum
	check (Enum);// Enum==NULL
...
}