Run the program as admin, that solves this problem for me usually.
If that doesn't work make sure that cube world isn't running as that sometimes can have an affect on the program(in my experience, but YMMV)
If that doesn't work make sure that cube world isn't running as that sometimes can have an affect on the program(in my experience, but YMMV)


, add me skype: reals12 i want talk you with pm!