Hello,
When I downloaded the Kudos demo from Impulse, it was very crashy and locked up Windows. I re-downloaded it directly from the developer's website and it ran perfectly! The version you are hosting needs to be updated pronto. By the way I just purchased the full game and I hope Impulse keeps the latest updates for that. This is one problem with second party sellers. They do not obtain updates from the publisher as fast as they should, especially when in this case the demo doesn't work that is hosted on Impulse.
Thanks,
Michael