Thats strange... I've just tried on a windows PC and worked fine. Can you give me the full specs of your system? what images are you trying to export? If you run it from cmd does it show anything? and if you run in cmd with s parameter? like "laigter.exe s" in cmd
I'll try in other computers also... can you try in other pc too?
I need to be able to reproduce this to be able to solve it.