Heres the full error, sorry about that:
"sf::Texture::loadFromFile(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, sf::Rect<int> const&)", referenced from:
ShockEngine::SplashScreenState::SplashScreenState(bool) in SplashScreenState.o
"sf::Window::create(sf::VideoMode, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned int, sf::ContextSettings const&)", referenced from: ShockEngine::GameEngine::GameEngine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned int, unsigned int, unsigned int, bool) in Engine.o
That's all it gives me. And yes, the original examples work.