No matter how many times I download either yugi game they just don't work and cause problems on both computers I use. Both computers use windows 7. I half to restore either computer, so to work like before.
It may just be easier for you to play on Dueling Network, you don't get the benefit of playing on a automated system but it doesn't require any download or installation . So providing you keep your Flash player up to date you shouldn't run into any problems.