Empty plots on Octave 4.0.3 (Windows)

[pehache]

Hi,

I have just installed Octave 4.0.3 on two windows 7 machines. One of 
them works just fine, but with the other one I get empty plots : the 
scripts are correctly executed, the figure windows do open, but the plot 
areas are always empty (blank).

This machine is a virtual one (VMWare), don't know it it makes a 
difference (well, I haven't had any graphic problem with it until now...).

Any idea ?

Thanks