Have you got a better link to an updated driver for the mh721?
I'm having a bit of a nightmare with the plotter, all of a sudden it won't connect to the machine from my computer but the machine is working fine. When I try and reset the machine or select cutter it won't connect, I've tried all the USB ports and comes up with an error message on every single one - "Can't communicate with device". Any ideas what might be causing it? I thought reinstalling new drivers might help but I might try a different cable / computer to try find out.
Cheers
K