Well the Ioline Studio 7 is a few years old now!
I used one back in the 90s and if I remember it was a nightmare making it cut over 2M long.
It would not plot a 1.5M oval and let the ends join!
I don't think there is a problem with software for your plotter I think the problem is finding software that runs Windows 7!!!
I would find a machine that runs XP and you will be able to run any software.
SC