title: Cannot use Octave 4.0.0 graphics toolkit functions under Windows 10
body: <p>I'm using Octave 4.0.0 on a fresh Windows 10 installation and the graphics toolkit related functions (such as <code>plot()</code> or <code>hist()</code>) are simply not working. <code>plot()</code> creates a new window that freezes immediately in the GUI and no windows at all in the CLI (Octave crashes in both cases). I made sure that <code>graphics_toolkit()</code> was set to <code>"gnuplot"</code> and not <code>"fltk"</code>, but I did not see any improvment. Any suggestion?</p>