Index: opengl-game.cpp
===================================================================
--- opengl-game.cpp	(revision b6e60b466536f52c6d8eda155ab7463bf033cafd)
+++ opengl-game.cpp	(revision ed7c953f751f8014bb991f578aa23fc75a72f3ac)
@@ -40,4 +40,5 @@
    if (window == nullptr) {
       cout << "Window could not be created!" << endl;
+      cout << gui->getError() << endl;
       return RTWO_ERROR;
    }
Index: vulkan-game.cpp
===================================================================
--- vulkan-game.cpp	(revision b6e60b466536f52c6d8eda155ab7463bf033cafd)
+++ vulkan-game.cpp	(revision ed7c953f751f8014bb991f578aa23fc75a72f3ac)
@@ -40,4 +40,5 @@
    if (window == nullptr) {
       cout << "Window could not be created!" << endl;
+      cout << gui->getError() << endl;
       return RTWO_ERROR;
    }