When using Qt Creator 2.3 and debugging a scene using textures such as the following:

import QtQuick 2.0
import Qt3D 1.0
import Qt3D.Shapes 1.0

Viewport {
    width: 480; height: 320

    Cube {
        effect: Effect { texture: "qtlogo.png" }
    }
}

Upon closing the Viewer, a segmentation fault is reported. The debugger points to a line in qopenglcontext.cpp.
This wasn't occurring when using Qt Creator 2.4.
When simply running the code without the debugger, there is no indication that this occurs.