unable to launch both demos

[the DXM]

can't be. I'm using the Nvidia drivers as it is. While I COULD update to a newer version the reason I haven't is because Nvidia's drivers are broken for this particular card on this particular model of laptop. Lucky me.

but in any case I'm using the 179.48 version which I can't imagine is outdated for Penumbra anyway.

very odd indeed.